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60 w bulb means it will take 60w power/second .

since 1hrs = 3600 second,

so total power consumed in 3600 sec = 3600*60w= 216000 watt = 216kw.

now since 1kwh = 1 unit of power = 1000w*3600=3600kw.

suppose we have to pay 10rupees for 1 unit.

means we have to pay 10 rupees for 3600kw

so for 216kw we have to pay 216/360=60paise=.60rupees

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15y ago

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