An electric heater is rated at

PHYSICS · Subjective · CBSE · Physics · Electricity · Electricity

Problem

1000\,\text{W}

. It is kept switched on for

30\,\text{min}

. (i) Calculate the electrical energy consumed in

\text{kWh}

. (ii) Express the same energy in joules. (iii) Express the same energy in the CGS unit (erg).