Question

how many units of electrical energy will be consumed if a bulb of 60 watt is used for 4 hours per day for 30 days in a room

Answer 1

1 kwh = 1000 W

Bulb Rating =60 W = .06 kW

Bulb illuminates for = 5hrs/day

Bulb consumes units( kWH)/day= .06×5= = .3 units/ day

so in 30 days it will consume=.3×30=[9 units]

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