For driving a current of 2 A for 6 minutes in a circuit, 1000 J of work is to be done. The e.m.f. of the source in the circuit is

For driving current of 2A for 6 min in a circuit, 1,000 J of work is to be done. The e.m.f. of the source is

For driving a current of 3 A for 5 minutes is an electric circuit, 900 J of work is to be done. Find the emf of the source in the circuit.

The induced e.m.f in a circuit

A cell is sending current in an external circuit. How does the terminal voltage compare with the e.m.f. of the cell ?