Question

An electric iron rated 800 W is operated for 3 hours daily in August month. How

much energy is consumed by electric iron? If the cost of a unit is 4 Rs, find cost of

electricity used?​

Answer 1

Answer:

power=800 W

= (800/1000) kW

=4/5 kW

time =3 hours

total days=31

total time=3x31 hours= 93 hours

electrical energy consumed

=power(in kW) x time (in hours)

= (4x93)/5

= 74.4 kWh

cost of 1 unit= rs. 4

total cost=74.4 x 4

= rs. 297.6

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