Im studying electrical engineering and i never really learned what rms actually means. I was always wondering in the back of my head how are we supposed to measure linear circuit components when we have an ac source. This is so satisfying, this is like a eureka moment! Thank you!
Iam a marine engineer .i saw all u r videos it was very useful for my electrical exam.your explanation is crystal clear and understanding.thanks for u r great job plz continue u r good work.
@@el_darkstar well, take your EE studies seriously. It is now become an expectation across the electrical engineering field to take the fundamentals of engineer exam, making you EIT-certified by the time you graduate. If you don’t believe me, look at all the job postings everywhere for new electrical engineers. I have been studying very thoroughly over the last year and still have another six months to go, focusing on every detail of Network Theory. Btw, RMS was not even mentioned during my network theory course. Never enroll in an important course with an incompetent professor
I have completed my graduation two months ago. But today my conception has been cleared about RMS value. Thank you so much for making this great video.
Gaurav this was explained brilliantly! I have read the pages in my study book like 5 times and was still scratching my head and you cleared it up in 8 minutes. Thank you.
You're doing a great job Gaurav! It takes me back to my days in the early '60s when I was an apprentice electrician at the NCB. I Attended Whitwood Mining and Technical college in Castleford UK.
@@DeepakVjthrissur How do you know? You know which professor he is talking about? The professor should have explained the steps anyway !!! There's no excuse, except most are lazy because they know their salary is covered for the rest of thier lives, irrespective of thier teaching. I have come across many, not to say there are a handful of excellent teachers and professors who are talented and dedicated in teaching. Teaching is both a science and art, and it should come from the heart.
@@ull893 Yeah i do agree that unfortunately not all have the gift of teaching in a way that inspires and makes you hang on every word, some are exceptionally good at it and i do think that in on itself that the methods of effective teaching can be taught to teachers themselves. I think eloquence and rhetoric should be prerequisite to becoming a teacher.
Yeah my apologies for that. Actually this was one of my initial videos. I did not had any good microphone 🎙️ but you can check my recent videos.. there is a lot of improvement 😁✌🏻
Good show! It might help to mention that the reason for taking the squares of the values is to eliminate the negative numbers from the negative half of the cycle, otherwise they would cancel themselves out in the mean or average. 20+10+0+(-10)+(-20)=0 /5 =0
Actually the reason for squaring the values is not to eliminate negative numbers. It is done because of the equation for power in electric circuits. Vrms is defined as the equivalent DC voltage that dissipates power at the same rate as the AC peak-peak voltage on the same circuit. Remembering our basic formulae for electric circuits: P = V * I and I = V/R, we can rearrange for power to be determined as P = V^2 / R. So what you are looking for is: "what is the average squared voltage through my circuit in AC, and what DC voltage would produce the same average squared voltage." (Since R will be the same by definition for both DC and AC power dissipation.) In this example, the average squared voltage for 20V peak-peak is calculated to be 200 V^2 . So a DC voltage of 14.14V would produce the same average squared voltage of 200V^2 and therefore dissipate exactly the same power as 20 V p-p AC. Vrms is useful for calculating power consumption of AC appliances, which is why we use it. The squaring and subsequent square root has nothing to do with eliminating negative numbers from the calculation. It is a necessary step in defining the equivalent DC voltage the dissipates power at the rate of P = V^2/R. If we lived in a different universe where power dissipated with voltage to the third power , then we would calculate the "cubic root mean cube Voltage" as a handy number to determine equivalent power dissipation.
Sir you are one of the best on youtube in this field ,and I find you today ! Thank you for your your deep knowledge explanations ... !!! I will try to watch all your videos ! You are a real treasure !
Thank you, sir. The explanation was clear, the audio was very good, and as an American, I found your accent to be perfectly clear to understand. I will be using more of your videos.
Brilliant thanks, Im home studying during covid lockdown for my full Ham license and guys like you are a great help. Nice clear video, liked and subscribed.
Very understanding, thank you sir. I think this is also applicable to music system power amplifier output. Manufacturers advertise PMPO watts to lure consumers with higher be Watts. They also mention somewhere RMS watts in lesser amount inconspicuous in small prints. RMS watts is the true music output of we get from the speaker.
Good work brother. Keep it up. You're helping so many students around the world with your easy to understand explanation. I will now use your video to help my students understand a bit better. Thank you.
Thanks i am in 11th standard was studying my sister's engineering book for fun, wasn't able to understand rms, after watching your video rms seemed like a 9th class formula
Hi, from England, UK. The sine waveform is normally used for basic ac calculations because that's what is supplied from the mains. And RMS voltage is normally used for stating ac voltages with a sine waveform because way back in past someone carried out an experiment with an electric fire element and they found that they got the same heat, and therefore the same power dissipation with the same applied RMS ac voltage as the dc supply, i.e., A 1Kw 240 volt fire element will dissipate 1Kw whether it's supplied with 240 volts ac RMS sine wave or 240 volts dc. And the term for calculating the values of different ac waveforms is the crest factor, which for a sine wave is 1.414, whereas other waveform have other figures, and just to complicate things a bit more, some ac waveforms have TWO different crest factors, that's something I learnt from working on the old type analogue TV sets with the old cathode ray tube, where some of the waveforms produced by the various circuits will give a different voltage when rectified to dc for each polarity, i.e., if you rectify it to positive it will give a different dc voltage than what you would get if you rectify it to negative, and this was often used by TV manufacturers to give different voltages of either polarity. And ac calculations get much more complex when you use reactive loads like those which are inductive or capacitive, then there's all manner of complex advanced maths involved, so you need to be good with maths!
What an excellent Video it is , and the way of making people understand is very very good. He have the good capability to make the people understand in very easy way . Thank You very much.
thank you sir actualy many of my teachers they explained may times and i don't understand properly now i will never forget thank you so much JAZAKALLLAH
In calculating rms value we has to consider only upper half sine wave which is of 0-10v. But you take voltage 0-20v in calculating rms value. I am confused now whether we have to take up to peak value or peak to peak voltage in calculating rms value. Will u please explain sir?
Really helpful video. Please sir tell us in your next video about what shall be the RMS value in case of square wave, rectangular wave, triangular wave, etc. (Such waves which are different than sine wave)
Please tell us why are we dividing our wave in smaller sections and why are we taking square and at the end why there is need to take square root? What you have explained is similar to what's been explained in classroom.
Video with better audio & video now available - th-cam.com/video/Y46YdrqkPv8/w-d-xo.html
Im studying electrical engineering and i never really learned what rms actually means. I was always wondering in the back of my head how are we supposed to measure linear circuit components when we have an ac source. This is so satisfying, this is like a eureka moment! Thank you!
I have to study this I'm in 9th 😢
I've been into electronics for more than 40 years. And this is the *best ever* explaination of the difference between RMS and average values.
Thank you 😊 Do share and subscribe
explanation starts @1:30
Thank you!
Iam a marine engineer .i saw all u r videos it was very useful for my electrical exam.your explanation is crystal clear and understanding.thanks for u r great job plz continue u r good work.
I just explained the meaning of rms value to my electrical professor who didn’t know!
A professor that doesn't understand RMS is a fraud. That's like saying you had to explain what blood is to a medical professor.
@@kingsman428 😂😂😂😂😂
I worked in NTPC, I met many engineers of my deptt, who didn't know RMS
He will be like:- chal chal baap ko mat sikha
If he listened to you carefully then he might have known the ans but if he listened to you surprisingly the he might not have known that earlier.
Amazing. Went through an entire circuits class and RMS wasn't well explained... VERY much appreciated!
Glad that helped 😇
College sucks
Lol I am on circuits 2 and i finally learned what RMS is XD
@@el_darkstar well, take your EE studies seriously. It is now become an expectation across the electrical engineering field to take the fundamentals of engineer exam, making you EIT-certified by the time you graduate. If you don’t believe me, look at all the job postings everywhere for new electrical engineers. I have been studying very thoroughly over the last year and still have another six months to go, focusing on every detail of Network Theory. Btw, RMS was not even mentioned during my network theory course. Never enroll in an important course with an incompetent professor
I have completed my graduation two months ago. But today my conception has been cleared about RMS value.
Thank you so much for making this great video.
Gaurav this was explained brilliantly! I have read the pages in my study book like 5 times and was still scratching my head and you cleared it up in 8 minutes. Thank you.
Glad it helped. Do share and subscribe to my channel 👍🏻✌🏻
You're doing a great job Gaurav! It takes me back to my days in the early '60s when I was an apprentice electrician at the NCB. I Attended Whitwood Mining and Technical college in Castleford UK.
Glad to know that ☺️
I am a med student who is at this point studying about the never system,,, I needed to know RMS and this lecture did it for me ... thanks!
Glad it helped 😇👍🏻
Noice
Forget the Accent!Damn this was discussed by my Professor Just Weeks ago! and now i really understabd what RMS is!
Because your professor was trying to explain the concept. This guy no concept its just the steps to get the result
@@DeepakVjthrissur How do you know? You know which professor he is talking about? The professor should have explained the steps anyway !!! There's no excuse, except most are lazy because they know their salary is covered for the rest of thier lives, irrespective of thier teaching. I have come across many, not to say there are a handful of excellent teachers and professors who are talented and dedicated in teaching. Teaching is both a science and art, and it should come from the heart.
@@ull893 Yeah i do agree that unfortunately not all have the gift of teaching in a way that inspires and makes you hang on every word, some are exceptionally good at it and i do think that in on itself that the methods of effective teaching can be taught to teachers themselves. I think eloquence and rhetoric should be prerequisite to becoming a teacher.
The accent is basically never a problem But a better microphone would be the cherry on the cake that this video is.
Yeah my apologies for that. Actually this was one of my initial videos. I did not had any good microphone 🎙️ but you can check my recent videos.. there is a lot of improvement 😁✌🏻
Thanks for detailing the RMS VALUE
Good show! It might help to mention that the reason for taking the squares of the values is to eliminate the negative numbers from the negative half of the cycle, otherwise they would cancel themselves out in the mean or average. 20+10+0+(-10)+(-20)=0 /5 =0
Actually the reason for squaring the values is not to eliminate negative numbers. It is done because of the equation for power in electric circuits. Vrms is defined as the equivalent DC voltage that dissipates power at the same rate as the AC peak-peak voltage on the same circuit. Remembering our basic formulae for electric circuits: P = V * I and I = V/R, we can rearrange for power to be determined as P = V^2 / R. So what you are looking for is: "what is the average squared voltage through my circuit in AC, and what DC voltage would produce the same average squared voltage." (Since R will be the same by definition for both DC and AC power dissipation.) In this example, the average squared voltage for 20V peak-peak is calculated to be 200 V^2 . So a DC voltage of 14.14V would produce the same average squared voltage of 200V^2 and therefore dissipate exactly the same power as 20 V p-p AC.
Vrms is useful for calculating power consumption of AC appliances, which is why we use it.
The squaring and subsequent square root has nothing to do with eliminating negative numbers from the calculation. It is a necessary step in defining the equivalent DC voltage the dissipates power at the rate of P = V^2/R. If we lived in a different universe where power dissipated with voltage to the third power , then we would calculate the "cubic root mean cube Voltage" as a handy number to determine equivalent power dissipation.
If you square negative number, you always got positive result.
Clinton Andrews in the first step, i will divide them equally in 10 parts? It must be always 10?
@@Cedillallidec very good explanation. Well done
wang bu, no he is just using 10 as a easy number you could use any number.
I m 2005 pass out, today i understand RMS value concept. Thanks Bro
He taught me in minutes more than my teacher in months
Sir you are one of the best on youtube in this field ,and I find you today ! Thank you for your your deep knowledge explanations ... !!! I will try to watch all your videos ! You are a real treasure !
Thanks 😊 do share the videos with your friends 😄
Thank you for your effort and willingness to share your knowledge. I am a automotive technical teacher and found this to be most helpful.
Duane Tegels thank you sir! 🙏
Best explanation for rms I've ever seen. Thnx for the video
I am a Electrical engg(BE EEE). I work in software for past 20 years. Thanks for all your videos
The best RMS value explanation in youtube!
I am 1 year removed from graduating as an EE, this by far is the best description i have ever seen!! thank you..
The world's best teacher thanks so much
Thank you, sir. The explanation was clear, the audio was very good, and as an American, I found your accent to be perfectly clear to understand. I will be using more of your videos.
Finally... an explanation brought down to layman's terms
Do share and subscribe 😊
Brilliant thanks, Im home studying during covid lockdown for my full Ham license and guys like you are a great help. Nice clear video, liked and subscribed.
Nothing to say more about this video. Just awesome...wow...👍👍👏👏
Another way to calculate Vrms is to divide Vmax by sqrt(2) since 0.7071~1/sqrt(2). I find this way easier to remember (Ie. Vrms = Vmax/sqrt(2) )
That works on sine waves. When the alternating current is not sine then it is a lot more complicated.
My professor just told the formula and left me confused. Great video
thanks
Very understanding, thank you sir. I think this is also applicable to music system power amplifier output. Manufacturers advertise PMPO watts to lure consumers with higher be Watts. They also mention somewhere RMS watts in lesser amount inconspicuous in small prints. RMS watts is the true music output of we get from the speaker.
Excellent explanation. I got the exact idea of RMS value now. Thanks a lot.
yoooo…... I watched a couple of videos on this ...but this video was the best out of the best !
Wow, excellent explanation! You made this crystal clear in a matter of minutes! Good job! Thank you so very much!
yes I have clicked the right video
you did it well
Good work brother. Keep it up. You're helping so many students around the world with your easy to understand explanation. I will now use your video to help my students understand a bit better. Thank you.
Hi! Excelent explanation! Many tks! Leandro from Argentina
I'm sharing this with Friends and Family. Thanks
Very cool video, I'm not even from an electrical engineering field but it was still helpful
Thanks i am in 11th standard was studying my sister's engineering book for fun, wasn't able to understand rms, after watching your video rms seemed like a 9th class formula
Glad to know that 😊 do share the video with your sister as well ✌🏻
@@GauravJ sure i will
Hi, from England, UK. The sine waveform is normally used for basic ac calculations because that's what is supplied from the mains. And RMS voltage is normally used for stating ac voltages with a sine waveform because way back in past someone carried out an experiment with an electric fire element and they found that they got the same heat, and therefore the same power dissipation with the same applied RMS ac voltage as the dc supply, i.e., A 1Kw 240 volt fire element will dissipate 1Kw whether it's supplied with 240 volts ac RMS sine wave or 240 volts dc. And the term for calculating the values of different ac waveforms is the crest factor, which for a sine wave is 1.414, whereas other waveform have other figures, and just to complicate things a bit more, some ac waveforms have TWO different crest factors, that's something I learnt from working on the old type analogue TV sets with the old cathode ray tube, where some of the waveforms produced by the various circuits will give a different voltage when rectified to dc for each polarity, i.e., if you rectify it to positive it will give a different dc voltage than what you would get if you rectify it to negative, and this was often used by TV manufacturers to give different voltages of either polarity. And ac calculations get much more complex when you use reactive loads like those which are inductive or capacitive, then there's all manner of complex advanced maths involved, so you need to be good with maths!
What an excellent Video it is , and the way of making people understand is very very good. He have the good capability to make the people understand in very easy way . Thank You very much.
Best explanation ever since school.
thank you sir actualy many of my teachers they explained may times and i don't understand properly now i will never forget thank you so much JAZAKALLLAH
Great video, a much clearer and simple explanation than I was given 20 years ago in engineering school.\
Glad it was helpful!
Thank You! I was not expecting to be that simple :))
Explained in best and easy understandable way.
Thanks. Do share and subscribe to my channel ☺️🙏
Good job, brother! Outstanding explanation. Thanks for making it clear!
Excellent explanation sir thank you🎉🎉🎉
In calculating rms value we has to consider only upper half sine wave which is of 0-10v. But you take voltage 0-20v in calculating rms value. I am confused now whether we have to take up to peak value or peak to peak voltage in calculating rms value. Will u please explain sir?
Very nicely explained. And if you can't stand the accent - just mute the audio and turn on subtitles - perfect :-)
bro thank u u r just outstanding , you are a very good teacher
keep it up
Really understood RMS after watching this....
Glad to know that. Do share the video with your friends 🙂
Thanks for clear explanation
Really helpful video. Please sir tell us in your next video about what shall be the RMS value in case of square wave, rectangular wave, triangular wave, etc. (Such waves which are different than sine wave)
i like this explanation not so fast not so slow but clear and concise
This channel deserves more subs. Thanks a lot for your help!
Thank you 😊 do share and subscribe 🙏✌🏻
Thank you for your time and knowledge
Thanks sir all lecture r very helpful for my studies
Your explanation is very clear sir
Thank you 😊 do share and subscribe 😊
Thq bro,just loved it👍❤️❤️❤️
you ARE KING! WONDERFUL EXPLANATION FINALLY I GET IT ;d
Hey seriously your explanation was sooo good... Thanks for the video
Was expecting more in depth tbh, but the bit you explained is nicely done
Excellent! Clear and concise! Thanks
Thank you guy.. fantastic
Gaurav... You explained it very nicely with example.. Great explanation skill !!!
Thanks 😊 do also check other videos on my channel.. and if you find them useful do subscribe 😊
Hon.For the first time someone explained in such a easy language,best Thank you.
Awesome teaching, thank you, sir
Worth watching
Thanks,very clear explanation. Got it and very helpful.
Wow the explanation!! is on point
Thank you for the clear explanation Mr Gaurav.
Welcome 😊 Also so check out other videos on my channel.. that may be useful too 👍🏻
@@GauravJ Sure will do, thank you
Ohhh u made it pretty easy "..thank you so much
Thanks. Do share and subscribe to my channel 👍🏻✌🏻
Thanks for sharing your knowledge very informative, it inspired me to focus more making electrical video
No word for i have big respect for you
Dammit.... I watched it again and again and now I consider my self to be able to represent what the hell is rms. Thanks
what an explanation. Hats off to you sir.
great job ...thanks a lot for simplify the things.
superb, clean and neat explanation....This video will surely help who doesn't know about ac rms value......keep uploading video buddy. Thankyou
Amazing explanation! Things made so simple-
It very knowledgable video all concept are clear thank you sir
nice Explanation thank you so mach
Please tell us why are we dividing our wave in smaller sections and why are we taking square and at the end why there is need to take square root?
What you have explained is similar to what's been explained in classroom.
Thank you so much👍😊
thank you gaurav ji❤
Very clear and concise explanation. Great!!!
Brill. Thanks very much. Well explained! 👍🙂
Glad it was helpful!
Nice one, but it would be greater if you could also explain "why" in an intuitive way rather than showing only the formulas.
Noted !!
Nicely explained. Thank you
Great explanation! Thanks for posting.
Sir, can you please make a video about the resonance frequency in both parallel and series circuits .
( RL,RC,RLC).
Clap for your explanation bro..🙏🙏
Thank you do share and subscribe 😊
Thank you for posting this. Peace.
Excellent explanation! Thanks!
Thanks for sharing the Knowledge. Keep up the good work.
Thank you for a simple and great explanation
Thank you so much for this video sir
I've learned better
Best presentation
Love to be the one of the viewer here...thanks alot!!..its evidently helpful. .
good explanation , give more tutorial
extent explanation
thank you very much Sir