A Level Physics Revision: All of Energy, Power and Resistance

Chapters:
00:00 Intro
00:18 EMF and Potential Difference
02:58 Base unit for the volt
04:38 speed of electrons
07:00 Resistance
07:20 Base unit of resistance
08:20 Ohm's Law
08:52 Ohm's Law experiment
10:28 IV Characteristics - Resistor
11:16 IV Characteristics - Filament Lamp
12:23 IV Characteristics - Thermistor
13:32 IV Characteristics - Diode
14:39 Resistivity
17:40 Resistivity Experiment
21:07 Power

This is excellent A Level Physics revision for all exam boards including OCR A Level Physics, AQA A level Physics, Edexcel A Level Physics, CIA Cambridge International A Level Physics, Eduqas etc.

[richarddale]

Just came across your channel and I have to say, this video is legendary for revision, nice work👍

[kofi]

very underrated.Deserve at least 1 million subscribers

[milanacs]

Absolutely great channel, I am behind by an month on physics as I switched a levels quite late and your channel is helping me to catch up, thank you very much

[Anna-cieq]

You are a legend. Been using lots of your videos to prep for paper 2 tomorrow and your channel is so helpful- thank you SO much

[chopstix]

Hey ZPhysics, Ive got my A level mock exam tomorrow, , and after watching your videos I feel much more confident! Thank you for such a in depth yet easy going revision session, you are severely underrated!

[yogsothoth]

These revision videos are so helpful! Keep it up :)

[lesnowguade]

Your 'well done' really helps me feel good about the revision I just did. 😁

[dnishal]

hey i added a comment on your old motion video and your work energy and power video, revisions going GREAT!!!
only have 4 chapters left which i can easily cover form the 12 total chapters!

these videos have been really helpful thank you so much

[athulgireesh]

thank you for this helpful revision video

[copiryte]

I would just like to comment on some confusion with IV Characteristics for non-ohmic conductors current is always proportional to p.d just not directly proportional.

And for filament lamps and thermistors the explanation for why resistance decreases/ increases depends on the current and temperature always increasing but causing opposite affects but with the same explanation this is because how filament lamp and thermistors are designed, hope this helps

[الصعلوك]

I failed my test because of the textbook. This is really helpful.

[muhammadibrahimkhokhar]

4:36 If you don't mind me asking, would me writing kgA-1m2s-3 be the same as me writing kgm2A-1s-3?

[n.hossain]

Hello Sir. Is it necessary for AS level to memorize the values of mass and electrical charge of an electron?

[SyedghulameTahaBukhari]

At 12:12, can you please explain why p.d. is increasing at a faster rate than current and not the following "the current is is increasing at a faster rate to the p.d. up until the point of inflection because the gradient is greater than one (it looks greater than one) after which the p.d. increases at a faster rate to the current because the gradient is less than one (it looks less than one)?

[em]

Would the resistivity be 0 at absolute zero?

[RaidenTheTomb]

hi sir i just wanted to understand...how is resistance the gradient if in all the examples, when there's a bigger slope the resistance is lower? As in it's also weird bcuz m=(y2-y1)/(x2-x1) so it doesn't match the formula which is R=V/I right? So is the resistance the gradient? Why is it high when it is flat or lower when it is at a greater slope

[makanakasvikiro]

SIR plz do a video on Operational amplifiers solving past papers I'm having a hard tym and u're the only one whose teachings I understand 😪😢

[xavierbritz]

Don’t trust the advance info for ocr after paper 1 so I got to revise this as well 😂

[miracleobeng]

in the I-v characteristics graph why is the I in the y axis and the v in the x axis?

[visweshshukla]

Please take some questions from Indian physics Olympiad too