Question

How do I find potential difference?

Answer 1

Can you elaborate?

Answer 2

I have some physics hw and was wondering if there is a formula but I have a thorough question :The potential difference between a storm
cloud and the ground is 1.9 × 10^8 V.
If a bolt carrying 1 C falls from a cloud to
Earth, what is the magnitude of the change of
potential energy of the charge?
Answer in units of J

Answer 3

I looked through my notes and saw v=IR but I don't think that applies

Answer 4

Give me a few minutes and I'll come back to this one...eating :)

Answer 5

No prob thanks!

Answer 6

Ok, here's how you'd calculate it:

\[\Large \Delta PE = q_0\Delta V = (1C)(1.9x10^8V)=1.9x10^8J\]This formula should be in your book somewhere. This one just happens to work out easily since it's only 1C :)

Answer 7

Thanks!

Answer 8

np :)