Question

the potential at a point is 20 v. the work done to bring a charge of 0.5 from infinity to this point will be

Answer 1

V= W/Q
V*Q = W
20*0.5
Ans : 10

Answer 2

Work done according to given data will be 10 J.

Electric potential at a point is defined as the change in potential energy or work done to bring charge from infinity to a particular point.

For this, electric potential at infinity is assumed to be zero.

V = W/Q

Given values are -

V = 20 V

Q = 0.5 C

W = V*Q

W = 20*0.5

W = 10 J

Therefore, work done to bring a charge of 0.5 C from point to infinity is 10 J.