A direct-current motor receives of electrical energy while operating.

PHYSICS · Multi-part · CBSE · Physics · Electricity · Electricity

Problem

A direct-current motor receives

7.2\times10^{7}\,\text{J}

of electrical energy while operating. (i) Convert this energy into kilowatt-hour. (ii) If the motor runs uniformly for

4\,\text{h}

, calculate its power rating in kilowatts.