an electric heater of rating 1000w is used for 5 hour per day for 20 days the electrical energy utilised is
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Given:
an electric heater of rating 1000w is used for 5 hours per day for 20 days
To find:
The energy used
Solution:
When some of the electrical appliances are used then the energy utilised is given by the product of the power of the appliances and the time period.
We have given the power of the electric heater is 1000w i.e, 1 kW
and the time period is 20×5 = 100 hr
Electrical energy = Power × Time
Electrical energy = 1 × 100
Electrical energy = 100 kWH
The total electrical energy utilised is 100 kWH
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