Question

Calculate the work done in taking a charge of 0.2C forth A and B if the potential at A is 20V ,and that at B is 30V.

Answer 1

work done =q(potential difference between points)

so W = 0.2(V2 - V1)

We are given that ....

V1 =20V
V2=30V

so ...

W=0.2(30-20)
W=2J