Question

Derive an expression for potential due to point charge. (V=kq/r) with diagram​

Answer 1

Answer:

Electric potential at a given position is the amount of work that has to be done to bring the charge at a finite distance from the point charge. r is the distance between two particles.

The equation for the electric potential due to a point charge is V=kQr V = kQ r , where k is a constant equal to 9.0×109 N⋅m2/C2.

Answer 2

Answer:

Answer:

The 'electric potential' due to a point charge is kq/r.

Solution:

Let us consider q' be the point charge placed at a distance r from the charge q.

By coulomb law, the force exerted on the point charge due to the positive charge q is

F = k→ (1)

The electric potential is defined as the work done to bring a point charge to a particular position.

V = W (2)

The work done can be determined by

W - Sx F.dr = == -Skdr

W = -kqg' [-] = kqq

Thus the electric potential' will be

V = kq

The electric potential for a point charge is kq/r.