Bout to go take a College Level Physics test…. And you’re the first person who’s actually listed them all next to each other and explained the differences. Thank you thank you thank you 🙏🏼
I'm so glad I could help! I had the idea to make this video when I was helping my son with his high school physics, and I found exactly what you have described - there were lots of references to the "right hand rule", but none that mentioned there's more than one rule, and when they apply!
I am on my third year of Engineering and it is quite a shame to say that today I got out of my confusion. Thank you very much!!! (Btw, I passed my course of Signals and Systems because of you, I am extremely grateful!!!)
It's great to hear that things are coming together for you in your understanding. And also that you passed your Sig & Sys course. Thanks for your comment.
Thank you so much. Learned and understood more within the first 2 minutes of the video about this subject than I did 30 minutes of lecture from my physics with Calculus class
I found the right hand rules very useful initially, but to be honest these days when working out the cross product vector directions, I just imagine a right handed coordinate system. I think of the first vector pointing in X, the second vector pointing in Y then I naturally find it easy to imagine the Z axis where the Vector Product Lays.
Thanks sir. I’m reviewing for my physics 2 final exam😊 Just wanna mention, for the second right hand rule in the video, I usually use the thumb to represent the direction of force, the fingers point to the direction of the current, while the fingers bend according to the direction of magnetic field. In such a case, the hand will adjust to the direction that suits the 2 direction, eventually having the correct direction for the force.
Simply Brillaint Professor /Dr Collings . It helps us revise and revisit and in many cases understand the concepts ( we studied in school ) more lucidly. I enjoy all your video series on digi comm. Keep up the great work and thank you very much .
This was incredibly helpful. Your explanations make it very easy to follow, and everything I've had scrambled in my head during class is sorted out thanks to you! Thank you so much!!
OMG! I absolutely came across "Iain Explains Signals, Systems, and Digital Comms" by absolute luck. Ian was my lecturer at Sydney University for a third year Electrical Engineering subject - Random Signals and Variables (i think that was the name of the subject!) over 18/19 Years ago. Ian was an absolute gun. Unfortunately, I can only remember 2 very good lecturers that I had over my 4 year Undergrad course at University. Ian was one of them! The rest were all shocking and no one bothered to go to the lectures because they lacked the ability to teach and could not speak English! Unfortunately, I did not achieve extremely high marks in Random Signals and Variables because the lecturer I had for Signals and Systems (a pre-requisite subject to Random) was absolutely useless with the damage already done! Brings back memories. I have been in the Power Systems Engineering field for the last 20 years, i have worked in a lot of areas like Protection, Earthing and Bonding, Commissioning and Project Management. Some advise for future students - consider a university other than Sydney University for an Electrical Engineering Degree.
Thanks so much for your nice comments about my teaching from all those years ago. I'm impressed you remember it, and the subject/unit. It's great to hear from past students. Sounds like you've worked on some interesting projects over the years.
Well that was really helpful..!! Earned my Subscription..!! This particular topic is one that should be simple, but can prove to be quiet confusing.. Excellent job explaining..!!
picture 2 and 4 are the same. The concept of charged particle can be the electric current from picture 2 represent by " I" or free electron in copper wire (no current) label as "motion" moves through a magnetic field, it experiences a force called the Lorentz force. in picture 2 it label as "F" . it move a wire like in motor . in picture 4 ,the Lorentz force move electrons and create "I" , this is like a generator .
I'm so glad to hear it helped. I decided to make the video after helping my son with his year-12 physics subject. I realised there was a lot of confusion out there when we searched for information on the right hand rule.
Fantastic explanation. I am learning how to do some basic wiring and this is really helping me understand the fundamentals. One question: these rules are for conventional current, not electron flow, correct?
Thanks a lot for distinguishing the different rules and their applications. What if, however we have a particle moving inside a homogenous magnetic field? which of these apply if we dont have a current?
The current "I" in the pictures can be replaced by "velocity direction of a moving positively charged particle". So in the case you are asking about, the second rule applies to positively charged particles. So, if a positively charged particle has motion in the same direction as an external uniform magnetic field, then it will continue to travel at the same speed in that direction unaffected. If it has a component of motion perpendicular to the direction of the magnetic field then it will experience a force perpendicular to that direction (according to the 2nd right hand rule), which will continually be changing direction to the left, resulting in an overall helical (spiral) path.
Hello sir, I have been studying electromagnetism and like the first 3 different rules were confusing me extremely much, but now I know which rule is used when, thanks so much for this :D Can you help me visualise a bit tho, the direction of force due to an infinite sheet which is going into the plane of paper using the thumb rule sir? I know the palm rule but I just wish everything could be explained using the thumb rule as many other cases use that !! Thanks alot
Excellentvidei, thank you, but just two small questions if I may, regarding the first two rules, you say B is into the page, but isn't it both going I abd coming out of the page? And also what about the index finger, I learned Flemings right hand rule but used the index finger. Thanks again
There is a lot of argument over cw and ccw wound coils. people think it reverses the poles while keeping the same connections to source. I disagree the poles remain the same what changes is the angle of opposite return path of the magnetic field on the outside of the coil. I am saying the angle of that opposite return is different not the direction . If you put two wooden poles 100 feet each and leaned them together, at the apex you could roll down on one of two sides but your still rolling "down". Host can I use this video on my channel? with your link? and can you make a video explaining cw ccw coils and there respective poles having the same connections to source ?? awsome video !
Iain thank you very much. This subject is a nuance that has befuddled me for years - I usually struggle with how to implement the RHR whenever it comes up. I copied your sketches into my reference book and I also 3D printed out a scan of a small hand I found on the internet. Now I am fully prepared! However, there is a 5th application I was wondering if you could add. In plasma physics we consider a "grad B" drift where there is no electric current at all (at least within a wire). You have the magnetic field direction and the "density" change in the magnetic field direction at a right angles to each other and this imparts a force on a moving charged particle in a particular direction according the RHR. Are you able to comment on this as well?
That's interesting. The orthogonality of the fields is captured by Maxwell's equations, whether the charged particles are moving within a wire, or in free space.
Thank you! A question though; For example 3 we get that B ia pointing upwards and thats the direction of the magnetic field. Does that mean that there is a south pole at the top end of the coil? Just really struggling to find the connection. Thanks!
The magnetic field is in the up direction inside the coil, so it's effectively like turning the coil into a magnet with a N at the top and a S at the bottom.
@@iain_explains See, that is what confuses me. When we draw a magnetic field, we draw lines from N to S, as a positive particle would have moved this way. But as B is pointed upwards, how come it's an N at the top and not an S? Is this rule not "in sync" with the way we draw field lines then?
North and South poles relate to the magnetic properties of solid objects. There is no solid object here - just a coil creating the same effect as if there was a solid magnet where the coil is. Perhaps you don't realise, but magnetic field lines exist inside solid magnets, going from South to North inside the magnet. And don't forget, something that looks to us like a solid object, is really just a collection of atoms that are more closely packed together than they are for liquids and gases. There is still plenty of "space" inside solid objects - at the atomic scale. Most of the "space" that an atom occupies is empty!
You can think of it like that, if you like. Alternatively, you can think of a solid object as being made up of multiple smaller objects (eg. atoms), and each of these component objects (eg. atoms) has a North and a South pole (aligned with the directions of the overall magnet's North and South poles), and there is a magnetic field between each of these small constituent parts, going from North to South. Then all the directions are consistent.
I think that the three first rules can be replaced by the clockwise rule ! 🙂. When the current is going away from me then the magnetic field is clockwise. When the current is coming towards me Then magnetic field is counterclockwise. And vice versa ! 🙂
Yes, I really should have drawn a picture of a rotating loop in the magnetic field - to show what I meant more clearly - and explain the basic operation of an electrical generator. ... Maybe I should do that in another video. Thanks for the suggestion.
Hello, quick question. So I saw this tutorial (timestamped): th-cam.com/video/vcStzn55MG0/w-d-xo.htmlsi=eTDhqLbhss2HR1nE&t=310 And i was unsure because it seems like the explanation was opposite of what you said here (they have field lines out of the page, but current is flowing CW). Just making sure, but is it that: For a normally flowing magnetic field, say out of the page, current is created CCW around a loop of wire. However, for a magnetic field that is increasing in strength out of the page, current is induced CW Is this correct? I guess my questions are: -is the RHR only valid for the first derivative/velocity of the magnetic field lines? (and not for second derivative/change of velocity effect) -is the word "induced" specifically used for creation of current from a change in magnetic field as opposed to a constant magnetic field? -so the kind of "result" from a change in magnetic field vs the "result" from a constant magnetic field have opposite directions, correct? Is that kind of similar to the concept of momentum/inertia resisting a change in state? -If you wanted the net magnetic field at any point in time, would you have to then examine both the first and second derivatives of the magnetic field equation? What about the third derivative of the magnetic field? Why do we not generally study it, and what are its effects? Thank you very much as always.
Sorry, I'm a bit busy to answer all the details in your question at the moment, but this video might help: "What Happens when a Magnet Falls Through a Coil?" th-cam.com/video/Dkrwy1KjcBQ/w-d-xo.html
Professor could you make a video on carriers and bands in your future videos. Am an undergrad and I can't wrap my mind around how multiple users fit into one single 5Mhz carrier for example.
the easiest explanation is actually: "the middle finger is for b-field; the thumb is reserved for the force; the index finger is for current...lalalala" 🎵
![แฉกลโกงงานวัด 2024 [ โกงมั้ยครับ ep.106 ] | DOM](http://i.ytimg.com/vi/taC5dpP3HXA/mqdefault.jpg)
Bout to go take a College Level Physics test…. And you’re the first person who’s actually listed them all next to each other and explained the differences. Thank you thank you thank you 🙏🏼
I'm so glad I could help! I had the idea to make this video when I was helping my son with his high school physics, and I found exactly what you have described - there were lots of references to the "right hand rule", but none that mentioned there's more than one rule, and when they apply!
Your in college level phyics and taking that?? Im still in highschool and already took it🙂🙂
@@abbasmohsen599 lol same
Fantastic Iain! I am taking signals & systems next semester and you are going to be my secret weapon!
Glad to hear it. Good luck with your studies. Let me know if there are any specific topics you think I've missed.
I am on my third year of Engineering and it is quite a shame to say that today I got out of my confusion. Thank you very much!!! (Btw, I passed my course of Signals and Systems because of you, I am extremely grateful!!!)
It's great to hear that things are coming together for you in your understanding. And also that you passed your Sig & Sys course. Thanks for your comment.
Any hints on how to pass signals and systems ?
You can check out my two videos titled “Essentials of Signals and Systems: Part 1 and Part 2” on my channel.
im just impressed how well you drew those small hands
and with a pen too
Thanks. I'm multi-talented. 🤣
This is the most comprehensive explanation of the right hand rule I've ever come across! Thank you
I'm glad you liked the explanation.
I love the helpful hand pictures. Most professors draw something horrible and are apologetic about it hahah
Thanks. Artists even find hands difficult to draw, so I was quite pleased with my efforts. 😁
Thank you so much. Learned and understood more within the first 2 minutes of the video about this subject than I did 30 minutes of lecture from my physics with Calculus class
Glad to hear that the video helped to summarise things for you.
I found the right hand rules very useful initially, but to be honest these days when working out the cross product vector directions, I just imagine a right handed coordinate system. I think of the first vector pointing in X, the second vector pointing in Y then I naturally find it easy to imagine the Z axis where the Vector Product Lays.
That depends on which direction you draw y. 😜
Thanks sir. I’m reviewing for my physics 2 final exam😊 Just wanna mention, for the second right hand rule in the video, I usually use the thumb to represent the direction of force, the fingers point to the direction of the current, while the fingers bend according to the direction of magnetic field. In such a case, the hand will adjust to the direction that suits the 2 direction, eventually having the correct direction for the force.
Good luck on your exam.
Simply Brillaint Professor /Dr Collings . It helps us revise and revisit and in many cases understand the concepts ( we studied in school ) more lucidly. I enjoy all your video series on digi comm. Keep up the great work and thank you very much .
That's great to hear. I'm so glad you like the videos.
This was incredibly helpful. Your explanations make it very easy to follow, and everything I've had scrambled in my head during class is sorted out thanks to you! Thank you so much!!
I'm so glad it helped!
This video has induced a thumbs up! 👍
Yay! Thank you!
OMG! I absolutely came across "Iain Explains Signals, Systems, and Digital Comms" by absolute luck. Ian was my lecturer at Sydney University for a third year Electrical Engineering subject - Random Signals and Variables (i think that was the name of the subject!) over 18/19 Years ago. Ian was an absolute gun. Unfortunately, I can only remember 2 very good lecturers that I had over my 4 year Undergrad course at University. Ian was one of them! The rest were all shocking and no one bothered to go to the lectures because they lacked the ability to teach and could not speak English! Unfortunately, I did not achieve extremely high marks in Random Signals and Variables because the lecturer I had for Signals and Systems (a pre-requisite subject to Random) was absolutely useless with the damage already done! Brings back memories. I have been in the Power Systems Engineering field for the last 20 years, i have worked in a lot of areas like Protection, Earthing and Bonding, Commissioning and Project Management. Some advise for future students - consider a university other than Sydney University for an Electrical Engineering Degree.
Thanks so much for your nice comments about my teaching from all those years ago. I'm impressed you remember it, and the subject/unit. It's great to hear from past students. Sounds like you've worked on some interesting projects over the years.
Thanks ❤
Love from India🇮🇳
Brilliant way to explain. I am about to take my physics exam in an hour and this just clarified a concept that I had no idea how to do. Cheers lain.
I'm so glad it helped! I hope your exam went well.
Hi there, I'm from South Africa. Thank you very much for this short and wonderful explanation. It's exactly what I needed.
That's great to hear. I'm glad you found the video useful.
Thank you so much! I have an exam tomorrow and u are like a life saver for me right now.
Glad I could help! I hope your exam went well.
thank you very much for the direct explanation as well as the illustration!
I'm glad you found it helpful.
Well that was really helpful..!! Earned my Subscription..!! This particular topic is one that should be simple, but can prove to be quiet confusing.. Excellent job explaining..!!
I'm so glad it was helpful!
I honestly don't understand why this is so necessary for highSchool Students.. 😔 😔
i thought i was the only one thinking like that
Unchanged century-old education system 🤷♂️
It's not that hard
Lots of kids are gonna do Engineering after high school
Whats up gangy who else up studying for physics rn!!! Hahahaha😅
thanks really
I'm glad the video helped.
same
@@iain_explains
Fourth rule about motor action is F = q v x B Thumb in direction of v and fingers in direction of B then F in direction of open palm
Spot On ! You are absolutely clear and concise. This is how I used to teach ! You ARE a top teacher !
First! Also I very much appreciate these different explanations being told together, in context, so there’s less confusion!
Great. Glad you liked it.
Amazing video - thank you🙌
Glad you found it helpful!
picture 2 and 4 are the same. The concept of charged particle can be the electric current from picture 2 represent by " I" or free electron in copper wire (no current) label as "motion" moves through a magnetic field, it experiences a force called the Lorentz force. in picture 2 it label as "F" . it move a wire like in motor . in picture 4 ,the Lorentz force move electrons and create "I" , this is like a generator .
Clears up my confusion. Thank you!
I'm so glad!
Very clear, very useful - thanks.
Glad it was helpful!
I am in 12th standard.....I was so so suffering from right hand rules...i totally gave up...but I am lucky to find this video ❤❤❤❤❤
I'm so glad to hear it helped. I decided to make the video after helping my son with his year-12 physics subject. I realised there was a lot of confusion out there when we searched for information on the right hand rule.
This video deserves million of views and likesssss❤
I'm so glad you found the video helpful. Hopefully others will start finding it in greater numbers.
Fantastic explanation. I am learning how to do some basic wiring and this is really helping me understand the fundamentals. One question: these rules are for conventional current, not electron flow, correct?
Yes, that's right.
Thanks a lot for distinguishing the different rules and their applications. What if, however we have a particle moving inside a homogenous magnetic field? which of these apply if we dont have a current?
The current "I" in the pictures can be replaced by "velocity direction of a moving positively charged particle". So in the case you are asking about, the second rule applies to positively charged particles. So, if a positively charged particle has motion in the same direction as an external uniform magnetic field, then it will continue to travel at the same speed in that direction unaffected. If it has a component of motion perpendicular to the direction of the magnetic field then it will experience a force perpendicular to that direction (according to the 2nd right hand rule), which will continually be changing direction to the left, resulting in an overall helical (spiral) path.
@@iain_explains Oh alright thanks so much for replying 👍
Thankyou sir
This video help me aloy in my competitive exams again thanks
That's great to hear!
Oh thank you very much. You helped me understand a lot. from Egypt 🇪🇬🇪🇬❤❤❤❤❤❤
I'm so glad it helped! It's great to connect and help people around the world.
simple and straight to the point! thank u
Glad you liked it.
Hello sir, I have been studying electromagnetism and like the first 3 different rules were confusing me extremely much, but now I know which rule is used when, thanks so much for this :D Can you help me visualise a bit tho, the direction of force due to an infinite sheet which is going into the plane of paper using the thumb rule sir? I know the palm rule but I just wish everything could be explained using the thumb rule as many other cases use that !! Thanks alot
Yeah Sir very specific about pamist theorem
Simply brilliant. Thank you.
Glad you liked it!
Excellentvidei, thank you, but just two small questions if I may, regarding the first two rules, you say B is into the page, but isn't it both going I abd coming out of the page? And also what about the index finger, I learned Flemings right hand rule but used the index finger. Thanks again
Thanku sir....its very helpful...
That's great to hear.
This helped so much. Thank you !
Glad it helped!
thankyou so much!! it cleared a handful of my doubts 🙏.
Glad to hear that
@@iain_explains get it!!! its a pun!!!! XDXDXD
There is a lot of argument over cw and ccw wound coils. people think it reverses the poles while keeping the same connections to source. I disagree the poles remain the same what changes is the angle of opposite return path of the magnetic field on the outside of the coil. I am saying the angle of that opposite return is different not the direction . If you put two wooden poles 100 feet each and leaned them together, at the apex you could roll down on one of two sides but your still rolling "down". Host can I use this video on my channel? with your link? and can you make a video explaining cw ccw coils and there respective poles having the same connections to source ?? awsome video !
Thank you sir ❤
You’re most welcome
Iain thank you very much. This subject is a nuance that has befuddled me for years - I usually struggle with how to implement the RHR whenever it comes up. I copied your sketches into my reference book and I also 3D printed out a scan of a small hand I found on the internet. Now I am fully prepared! However, there is a 5th application I was wondering if you could add. In plasma physics we consider a "grad B" drift where there is no electric current at all (at least within a wire). You have the magnetic field direction and the "density" change in the magnetic field direction at a right angles to each other and this imparts a force on a moving charged particle in a particular direction according the RHR. Are you able to comment on this as well?
That's interesting. The orthogonality of the fields is captured by Maxwell's equations, whether the charged particles are moving within a wire, or in free space.
thanks so much for this!
You're welcome!
Very helpful. Thank you!
Glad it was helpful!
Thank you! A question though; For example 3 we get that B ia pointing upwards and thats the direction of the magnetic field. Does that mean that there is a south pole at the top end of the coil? Just really struggling to find the connection. Thanks!
The magnetic field is in the up direction inside the coil, so it's effectively like turning the coil into a magnet with a N at the top and a S at the bottom.
@@iain_explains See, that is what confuses me. When we draw a magnetic field, we draw lines from N to S, as a positive particle would have moved this way. But as B is pointed upwards, how come it's an N at the top and not an S? Is this rule not "in sync" with the way we draw field lines then?
North and South poles relate to the magnetic properties of solid objects. There is no solid object here - just a coil creating the same effect as if there was a solid magnet where the coil is. Perhaps you don't realise, but magnetic field lines exist inside solid magnets, going from South to North inside the magnet. And don't forget, something that looks to us like a solid object, is really just a collection of atoms that are more closely packed together than they are for liquids and gases. There is still plenty of "space" inside solid objects - at the atomic scale. Most of the "space" that an atom occupies is empty!
@@iain_explains Aha! So the field lines inside a solid object is different/opposite from the ones excerted on the outside?
You can think of it like that, if you like. Alternatively, you can think of a solid object as being made up of multiple smaller objects (eg. atoms), and each of these component objects (eg. atoms) has a North and a South pole (aligned with the directions of the overall magnet's North and South poles), and there is a magnetic field between each of these small constituent parts, going from North to South. Then all the directions are consistent.
Needed this!!
I'm glad it was helpful.
I think that the three first rules can be replaced by the clockwise rule ! 🙂.
When the current is going away from me then the magnetic field is clockwise. When the current is coming towards me Then magnetic field is counterclockwise.
And vice versa ! 🙂
Are you using conventional current or the electron-flow current?
"Conventional current" _is_ current. "Electron-flow" is electron flow (ie. it is _not_ "current").
You are a life saver! thank you!
Glad it helped!
Thank you so muchhhhhhhhhh❤️❤️❤️❤️
I'm glad you found it helpful.
The fourth use may need to be redone more clearly. Slightly confusing. And this is coming from a physicist, lecturer and teacher. Cheers!
Yes, I really should have drawn a picture of a rotating loop in the magnetic field - to show what I meant more clearly - and explain the basic operation of an electrical generator. ... Maybe I should do that in another video. Thanks for the suggestion.
Hello, quick question.
So I saw this tutorial (timestamped):
th-cam.com/video/vcStzn55MG0/w-d-xo.htmlsi=eTDhqLbhss2HR1nE&t=310
And i was unsure because it seems like the explanation was opposite of what you said here (they have field lines out of the page, but current is flowing CW).
Just making sure, but is it that:
For a normally flowing magnetic field, say out of the page, current is created CCW around a loop of wire.
However, for a magnetic field that is increasing in strength out of the page, current is induced CW
Is this correct? I guess my questions are:
-is the RHR only valid for the first derivative/velocity of the magnetic field lines? (and not for second derivative/change of velocity effect)
-is the word "induced" specifically used for creation of current from a change in magnetic field as opposed to a constant magnetic field?
-so the kind of "result" from a change in magnetic field vs the "result" from a constant magnetic field have opposite directions, correct? Is that kind of similar to the concept of momentum/inertia resisting a change in state?
-If you wanted the net magnetic field at any point in time, would you have to then examine both the first and second derivatives of the magnetic field equation? What about the third derivative of the magnetic field? Why do we not generally study it, and what are its effects?
Thank you very much as always.
Sorry, I'm a bit busy to answer all the details in your question at the moment, but this video might help: "What Happens when a Magnet Falls Through a Coil?" th-cam.com/video/Dkrwy1KjcBQ/w-d-xo.html
yes i agree with both of u👍👍
Thank you very much
You are welcome
Thanks!
You’re welcome!
Professor could you make a video on carriers and bands in your future videos. Am an undergrad and I can't wrap my mind around how multiple users fit into one single 5Mhz carrier for example.
This video might help: "Mobile Standards Evolution: FDMA, TDMA, CDMA, OFDMA" th-cam.com/video/bm53RpK-S2k/w-d-xo.html
@@iain_explains sir you're a saint☺️🤗❤️
thx
Thank you😁🌹
You’re welcome 😊
Thank you sir!
You are welcome! I'm glad it helped.
Thanks for this I think am getting the hang of thanks to you.
That's great to hear. I'm glad the video was useful.
thank you!
You're welcome!
thank you!
You're welcome!
thanks!
I feel bad for all the EEs without hands...
For the second hand rule, is it not just easier to use Fleming's left hand rule?
thank you!!!!
You're welcome!
legend
What if the current is clockwise and the North pole is on the top and the South pole is on the bottom?
the easiest explanation is actually: "the middle finger is for b-field; the thumb is reserved for the force; the index finger is for current...lalalala" 🎵
why is right hand rule different when there's a magnetic field inducing current?
Your drawings are good
Thanks. I'm glad you like them.
@@iain_explains i understood the concepts very well . Keep going ...!
So they can imprint right handedness into kids
hazzah
Anyone Indian 😅?
Thank you
You're welcome
Thanks!
Super helpful! Thank you!!
You're so welcome!
Thanks so much.
You're welcome!
Thank you
You're welcome