PH-913

Power

Physics · Secondary 3 · Medium · Power

A

60\,\text{W}

lamp is switched on for

3.0\,\text{h}

. How much electrical energy does it use? (Give your answer in joules.)

$1.8\times10^{4}\,\text{J}$
$6.48\times10^{5}\,\text{J}$
$1.08\times10^{6}\,\text{J}$
$3.6\times10^{7}\,\text{J}$

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