these videos are so good to learn the concepts! over 2 days i was able to learn the whole topic and now i can go further indepth with things and practice. thanks!!
Thank you for the brilliant teaching as always. Your videos are not only helpful for NCEA students, but also make physics interesting to those students
Hey, thanks so much for these videos, they are really helpful. I'm taking level 3 physics this year. Are you going to make any videos covering the other aspects of level 3 physics? Such as waves, mechanics, and electricity? Because these resources are a huge help.
Hi Blake. That's great feedback to hear! Videos for all the topics you've mentioned are on the way, for both Level 2 and Level 3. My current timeline is to have them all released before Term 3, though time permitting I may have them finished much sooner.
Thanks Harry. Getting a feel for the types of questions you'll face comes with practising past papers, the more the better. When formatting your answers the important thing is that you're clearly communicating what the question is assessing. Bullet points can be very useful for this in word answers. If you haven't already, you may wish to check out my exam advice video th-cam.com/video/aLhG7Ed4xNM/w-d-xo.html
Hi just wondering if you have any content on combined circuits that have both parallel and series components, these typically confuse me the most as they often involve switches e.t.c So it would be great to know if you have any videos covering these
Hi Jeffery, I have a worked example on combining resistances in a combination circuit on page 13 of my notes (drive.google.com/file/d/1CRga6lD1hijUQtPF_A8lBuGeW6YwTQBm/view) and have filmed a demonstration on power dissipation in such a circuit (th-cam.com/video/nwzBYOqQ24Y/w-d-xo.html).
When you hovered the disk magnet above the copper you mentioned that copper experiences a changing magnetic field. I'm confused on why that happens. Also is that section lenz's law as the current is inducing a magnetic field which is repelling the magnet as that was the change causing it? Just asking for the clarification, thanks if you do reply and thanks for the video.
Hi Neutronzz, great questions. As the permanent magnet is moved closer or further away from the copper, the copper will experience the magnetic field from the permanent magnet increasing or decreasing in magnitude. For this reason the copper experiences a changing magnetic field, which as you've hopefully learned, induces a voltage. This voltage in the copper causes a current to flow in the copper. The current flowing in the copper generates a magnetic field in opposition to the magnetic field of the original permanent magnet. This makes sense from a conservation of energy standpoint, as the energy needed to create the magnetic field in the copper comes from the energy spent moving the permanent magnet against the repulsive force. Hope this helps!
Hi :) Just a question - I’m just wondering how important it will be for me to know level 2 electricity content if I’m doing level 3 electricity? Since I skipped level 2 electricity
Hi Bunwie, launching straight into L3 Electrical Systems would be quite challenging, as a lot of it builds upon knowledge from L2 Electricity and Electromagnetism. You can certainly acquire this knowledge yourself, as long as you devote the appropriate amount of time you need.
day before exam. coming in clutch as usual
Last minute study revision. Very good vid, clean and concise.
That’s crazy I’m still learning I skipped most my physics classes this year, mb
These videos are incredible, really helped me understand a few of the concepts, especially around magnetic fields.
Thanks RubrikDuck, that's great to hear. Getting your head around all the magnetic field rules can tough to start with.
these videos are so good to learn the concepts! over 2 days i was able to learn the whole topic and now i can go further indepth with things and practice. thanks!!
Thanks Risha, that's great to hear!
you are an absolute life saver thank you SO much
Thanks Zara, you're welcome!
Thank you for the brilliant teaching as always. Your videos are not only helpful for NCEA students, but also make physics interesting to those students
Thanks for the kind words, that's awesome to hear!
Hey, thanks so much for these videos, they are really helpful. I'm taking level 3 physics this year. Are you going to make any videos covering the other aspects of level 3 physics? Such as waves, mechanics, and electricity? Because these resources are a huge help.
If not could you point me towards some good resources for studying level 3 physics?
Hi Blake. That's great feedback to hear! Videos for all the topics you've mentioned are on the way, for both Level 2 and Level 3.
My current timeline is to have them all released before Term 3, though time permitting I may have them finished much sooner.
Shot g
I'm actually cooked beyond comprehension 😭‼
Legend thanks for these notes. Any tips for understanding what type of question it is and how to correctly format your answer?
Thanks Harry. Getting a feel for the types of questions you'll face comes with practising past papers, the more the better. When formatting your answers the important thing is that you're clearly communicating what the question is assessing. Bullet points can be very useful for this in word answers. If you haven't already, you may wish to check out my exam advice video th-cam.com/video/aLhG7Ed4xNM/w-d-xo.html
Hi just wondering if you have any content on combined circuits that have both parallel and series components, these typically confuse me the most as they often involve switches e.t.c So it would be great to know if you have any videos covering these
Hi Jeffery, I have a worked example on combining resistances in a combination circuit on page 13 of my notes (drive.google.com/file/d/1CRga6lD1hijUQtPF_A8lBuGeW6YwTQBm/view) and have filmed a demonstration on power dissipation in such a circuit (th-cam.com/video/nwzBYOqQ24Y/w-d-xo.html).
Thank you for this video.
You're welcome Eden.
When you hovered the disk magnet above the copper you mentioned that copper experiences a changing magnetic field. I'm confused on why that happens.
Also is that section lenz's law as the current is inducing a magnetic field which is repelling the magnet as that was the change causing it?
Just asking for the clarification, thanks if you do reply and thanks for the video.
Hi Neutronzz, great questions.
As the permanent magnet is moved closer or further away from the copper, the copper will experience the magnetic field from the permanent magnet increasing or decreasing in magnitude. For this reason the copper experiences a changing magnetic field, which as you've hopefully learned, induces a voltage.
This voltage in the copper causes a current to flow in the copper. The current flowing in the copper generates a magnetic field in opposition to the magnetic field of the original permanent magnet.
This makes sense from a conservation of energy standpoint, as the energy needed to create the magnetic field in the copper comes from the energy spent moving the permanent magnet against the repulsive force. Hope this helps!
@@MrWhibleyPhysics yes it does, thank you very much.
Hi :) Just a question - I’m just wondering how important it will be for me to know level 2 electricity content if I’m doing level 3 electricity? Since I skipped level 2 electricity
Hi Bunwie, launching straight into L3 Electrical Systems would be quite challenging, as a lot of it builds upon knowledge from L2 Electricity and Electromagnetism.
You can certainly acquire this knowledge yourself, as long as you devote the appropriate amount of time you need.
thanks sir
You're welcome.