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Vivek Kohli
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Asked: 2025-02-22T06:31:43+00:00 In:

The electric power consumed by a 220 V-100 W bulb when operated at 110 V is:

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Poll Results

100%(a) 25 W ( 1 voter )
0%(b) 30 W
0%(c) 35 W
0%(d) 45 W
Based On 1 Vote

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The resistance of the bulb is R = 220/100 = 484Ω. When operated at 110V, power consumed is P ′ = 110²/484 = 25W. Correct answer: (a) 25 W.
Class 12th Science Physics NCERT MCQ Questions
NCERT Books MCQ Questions Session 2024-2025.

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    1 Answer

    1. The resistance of the bulb is

      R =220²/100= 484Ω
      . When operated at 110V, power consumed is

      P ′ = 110²/484 = 25W.
      thus, the Correct answer: (a) 25 W.

      For more visit here:
      https://www.tiwariacademy.com/ncert-solutions/class-12/physics/chapter-3/

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