How much effort is required to move a charge of 4 coulombs between two sites with a potential difference 10 V.

Solution:

Concept:  If there is a fee, Q is moved from an electrostatic potential point V₁ to a different place with potential electrostatic V₂ Then the job is finished. W the formula is as follows:

W = Q (V₂ - V₁) or

W = qV

Calculation: As shown, a charge of 4 coulombs is moved across a potential difference of 10 volts.

q = 4 coulomb

V = 10 v

W = q x V

W = 4 $\times$10

W = 40 joules