Physics

Problem

An electric heater is rated

1000\,\text{W},\,250\,\text{V}

. It is connected to a

200\,\text{V}

mains supply. The power it now dissipates is approximately a)

800\,\text{W}

512\,\text{W}

640\,\text{W}

1000\,\text{W}