A VCR set of 90 watts runs for 6 hours. How much electrical energy is consumed?

54 J

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0.54 kWh

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5.4 Wh

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Solution

The correct option is B 0.54 kWh
We know, $P o w e r = \frac{E n e r g y c o n s u m e d}{t i m e}$

⇒ $E n e r g y c o n s u m e d$ = Power × time

= 90 watt × 6 hours

= 540 watt-hour (Wh)

= 0.54 kilowatt-hour (kWh)

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