Q. When a 2 μC charge is carried from point A to point B, the amount of work done by the electric field is 50 μJ. What is the potential difference and which point is at a higher potential ?
(a) 25 V, B
(b) 25 V, A
(c) 20 V, B
(d) both are at same potential
Click to See Answer :
$\displaystyle W_c = -(U_B -U_A)$
$ \displaystyle W_c = q(V_A -V_B)$