State the relation between work, charge and potential difference for an electric circuit. Calculate the potential difference between the two terminals of a battery if 100 joules of work is required to transfer 20 coulombs of charge from one terminal of the battery to the other.
V = WQ Here, V = Potential difference, W = Work done, Q = Electric charge W = 100 J Q = 20 C V = WQ=10020 = 5V
