Physics

Problem

A small desk fan draws a constant

12\,\text{W}

of electrical power while running. If the fan runs continuously for

30\,\text{min}

, approximately how much electrical energy does it convert? a)

1.3\times10^{4}\,\text{J}

3.6\times10^{4}\,\text{J}

2.2\times10^{4}\,\text{J}

7.2\times10^{4}\,\text{J}