Question

workdone in moving a 5C charge across a conductor is 100J.if the potential at one end of a conductor is 10V.find the potential at the other end of the conductor

Answer 1

Workdone by charge = q. Δv [given the charge is positive]
100 = 5 (V1 - V2) [ since, workdone is positive, it means Δv is also positive]
100/5 = V1 - V2
20 = V1 - V2
V1 = 20 + V2
= 20 + 10 = 30 V