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A generator is on daily use and in the process, ten 60 W and five...

Physics
JAMB 2008

A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. the energy consumed daily is?

  • A. 0.96 kWh
  • B. 1.92 kWh
  • C. 9.60 kWh
  • D. 19.20 kWh
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Correct Answer: Option D
Explanation

Energy consumed = power x time
= (60 W x 10 + 40 W x 5) x 24 h
= (600 W + 200 W ) x 24 h
= 800 W x 24h = 19200 w h
= 19.2 kWh

There is an explanation video available below.


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Explanation Video

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