Question

Define ' 1volt '. State the relationship between work, charge and potential difference foran electric circuit. Calculate the potential difference between two terminals of the battery if 100 joules of work is required to transfer 20 Coulombs of charge from one terminal of the battery to the other.

Answer 1

Potential difference between two points in an electric field is said to be 1 volt if 1 joule of work is done to transfer a charge of 1 coulomb between the two points against the electric field.

Mathematically, 1 Volt = 1 Joule /1 Coulomb

Here,

W = 100 J

q = 20 C

V = W/q

=> V = 100/20 = 5

So p.d. = 5 volt