A 100 watt electric bulb is used for five hours. How much energy is consumed by the bulb?
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Answer:
0.5 kwh or 0.5 unit
Explanation:
Power of electric bulb = 100 w
= 100 / 1000 ( 1 kw = 1000 w )
= 0.1 kw
Time = 5 hours
Energy ( E ) = Power ( P ) × Time ( T )
= 0.1 kw × 5 hours
= 0.5 kwh or unit
Hope it is helpful
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