Resistance and Resistivity - IB Physics

[HAB]

My mates and I are very grateful for all your videos sir. We appreciate you. My final is after tomorrow, and if I get a good mark, I truly owe some of it to you! Also, I became interested in Physics after understanding it with your simple and interesting explanations.

[francisezeudogu]

Your teaching are so simple to understand. My first time. You have another subscriber bro. Keep up

[tvl]

You know that feeling when you come across a goldmine of a channel... well now I do lmao. These videos are so good, is there any chance you teach Maths AAHL as well?

[karhukivi]

Resistance can vary in many materials, like gases, electrolytes, semiconductors and even in metals at high current densities. Ohm's law really only works for metals when the current isn't too high but it is nevertheless a very useful formula.

[axelb]

could you consider resistance to be the speed at which you are losing volts?

[saivishwath]

In the example isn't the diameter rhe cross section of the wire