an electric bulb is is rated 220V and 100W. when it is operated on 110V, the power consumed will be ??
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1
Answer:
An ELectric bulb is rated 220V & 100W. WHEn it is operated on 110V,the power consumed will be? by that bulb to the flow of current across the circuit. -Therefore, the Power consumed by this bulb across 110 V is 25 Watts.
Answered by
1
Answer: Pottential difference - 220v
Power - 100w
by using formula,
P = V^2/R,
100 = 220 X 220
R
R = 22 X 22
R= 484Ω
New Pottential difference = 110v
Power = 110 X110
484
Power = 25w
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