if power is 100 watt and voltage 220.find resistance?
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Answer:
Answer:
Explanation:
(a): 25w
Solution : R=V2/P
= (220)2/100
= 484 ?
The resistance of the bulb remains constant
if the supply voltage is reduced to 110 V then V?=110 V
the power consumed by it is given by the expression = V?2/R
= (110)2/484 = 25w
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