An electric heating element consumes 500 W when connected to a 100 V line. If the line voltage becomes 150 V, the power consumed will be -
For driving a current of 3 ampere for 5 minutes in an electrical circuit, 900 joule of work is to be done. Find the emf of the source in the circuit.
Equivalent resistance between point C and D in the combination of resistance shown is –
In the circuit shown in figure the value of R is-