Question

40 watt tube light is used for 8 hours per day find how much unit of energy is consumed by the tubelight in one day
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Answer 1

Answer:

40 watts of power over 8 hours amounts to 40×8 watt hours i.e. 320 watt hours

Answer 2

Given:

40 watt tube light is used for 8 hours per day.

To Find:

The unit of energy that is consumed by the tube light in 1 day.

Explanation:

Tube light's consuming 40 per 8 hours

So, 1 unit = 1 kw

Therefore the consumed energy = (40×8)/1000

                                                       = 320/1000

                                                        = 0.32 watt hours

Answer = 0.32 watt hours