Question

An electric heater is red 4 watt 220 volt find the cost of using this heater for 12 hours ep 1 kilowatt of electric energy cost rs 3.25

Answer 1

P = power rating of the heater = 4 W
t = duration of use = 12 hr

total energy consumed = P x t = 4 x 12 = 48 Wh = 0.048 kWh

cost of electricity = ₹ 3.25 per kWh

so, total cost = 3.25 x 0.048 = 0.156 ₹ ...

this is the answer.

Answer 2

Please refer to the picture for the answer......

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