Question

An electric bulb of 40watt is used for so days at 5 hour per day find the units of energy consumed by the bulb and the cost of using electricity at the rate rupees three per unit .

Answer 1

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•Given:-

Power of Electric bulb = 40 W

Used For 50 days at 5 hours per day .

Rate of electricity = 3 Per Unit.

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•To Find:-

Energy consumed by the bulb and the cost of using electricity of 50 days .

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Solution:-

According to the Given Question

⟹Energy Consumed by bulb In one day = Power of Bulb × Time used for one day

Energy consumed=40*5 =200 watt

Energy consumed by bulb in 50 days =200*50=10000watt hour

Therefore,10000 watt = 10000/1000=

10 kwh

Cost of 1 unit electricity=3 per unit

Cost of 10 unit =3*10= Rs .30.

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Hope it's helpful❤✨