How much energy will be consumed by burning the 200-watt heater for 2 hours?
AlokKumar85:
if i want to know how much unit the lamp consumes then?
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![200 \times 2 = 400joul 200 \times 2 = 400joul](https://tex.z-dn.net/?f=200+%5Ctimes+2+%3D+400joul)
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