100V supply is appllied between 500K Resistance bulb. for 1
kwh energy, how long time the bulb will glow? explain the
calculating method.
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Answer Posted / manish
POWER P = V * I = V * V/R = 100 * 100/(500*1000)
= 10000/500000 = 1/50 = 0.02 WATTS
GIVEN ENERGY = 1 KWH = 1000 WATT HOUR
TIME FOR WHICH BULB WILL GLOW
= (1000 WATT HOUR) / (0.02 WATT)
= 1000/0.02 HOURS
= 50000 HOURS
| Is This Answer Correct ? | 14 Yes | 2 No |
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