Question

An electric bulb of 6OW is used for 6hr per day. Calculate the units of energy consumed
in one day by the bulb.
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Answer 1

energy = P X T= 60W X 6hr = 60 X 6 X 60 X 60 seconds

= 3.6 X 6 X 10^ 6 = 21.6 X 10^6 J or 21.6 MJ

tip remember that 1Kwhr = 3.6 X 10^6 J

Answer 2

Answer:

energy consumed = power × time = 60KW/1000 × 6hrs = 360/1000KWh = 0.36KWh

thus, it consumes 0.36 units of electricity in one day.

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