Physics

Problem

An electric heater is rated

1.5\,\text{kW}

. It is switched on for

2\,\text{h}

. The work done (energy consumed) in joules is a)

7.2\times10^{6}\,\text{J}

5.4\times10^{6}\,\text{J}

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

1.08\times10^{6}\,\text{J}