The power of an electric motor is 242 W when connected to a 220 V supply. When motor is operated at

Assertion (A): Meter bridge wire is generally made of constantan. Reason (R): Constantan has a very

Current density () at an area = (î + 4ĵ) mm² is given by = (2î + 3ĵ) A/m². The current through the a

Equivalent resistance of the network between the terminals A and B is

An electric bulb rated 50 W – 200 V is connected across a 100 V supply. The power dissipation of the

The value of unknown resistance (x) for which the potential between B and D will be zero in the arra