Question

write the expression for electric potential energy of a system of two points charges​

Answer 1

Answer:

electric potential will be due to two configuration

let's suppose two charges q1 and q2

to place charge q1 in space we need not to do any work.

thus potentially due to charge q1 in space will be given by

V=kq1/r

but we need to do work against feild of q1 to place charge q2 given by

W=kq1q2/r12.

and total work =kq1q2/r12