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A 100W-220V bulb is connected to 110 V source. Calculate thepower consumed by the bulb. |
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Answer» Solution :POWER of the BULB, `P=100W` Operating voltage, `V=200V` Resistance of the bulb, `R=(V^(2))/(P)=((200)^(2))/(100)=484Omega` Actual operating voltage, `V^(1)=100V` Therefore, power consumed by the bulb, `P^(1)-((V^(1))^(2))/(R )=((100)^(2))/(484)=25W`. |
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