A 220 volt , 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be: - Physics MCQ AIEEE 2003 2026 | ExamTest.live

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A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be:

Solution & Step-by-step Explanation

Resistance of the bulb R = \frac{V _{r a t e d}^{2}}{P _{r a t e d}} = \frac{22 0 ^{2}}{1000} .Power consumed at V = 110 V : P_{co n s u m e d} = \frac{V ^{2}}{R} = \frac{11 0 ^{2}}{( 22 0 ^{2} /1000 )} = (\frac{110}{220})^{2} \times 1000 = (\frac{1}{2})^{2} \times 1000 = \frac{1000}{4} = 250 watt

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A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be:

750 watt

500 watt

250 watt

1000 watt

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