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Question

An electrical appliance of 500 W is used for 2 hours per day. Calculate the energy consumed in a day.
  1. 1

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Solution

The correct option is A 1
Given,
Power of appliance, P=500 W=0.5 kW
Time used, t=2 hrs
We know,
Energy =Power×time taken
=0.5 kW×2 h
=1 kWh

The energy consumed by the appliance in a day is 1 kWh .

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