Question

when a particle of charge 20 coulomb is brought from infinity to a point P 2.0 mj of work is done by the external force.what is potential at P.

Answer 1

2.0 mj= 2×10-³ j

v=w/q

v= 2×10-³/20

v = 1×10-³/10

v= 10-⁴v