Question

find the potential difference between A and B :

Answer 1

hey friend!!! I am not sure about it.

-___________
Parallel plates have a uniform E field between them, ignoring edge effects.

So the voltage changes linearly with position. Pick a zero for voltage, say the negative plate.

The other plate is 150 V.

The electric field points from the 150 V plate to the 0 V plate and E = 150V/0.13 m.

That's the slope of the line when you plot V vs x, for example.

∆V = -Ed cos theta.

Since you want magnitude, ignore the minus sign, and since you are moving directly perpendicular to the plates, you can ignore the cos theta.

So

∆V = Ed. = ER_____(ans)

hope it will help you..