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Question 30465
JEE Physics · Medium

Work, Power and Energy: JEE — Power Dissipation MCQ

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JEE — Power DissipationMediumQuestion 30465

Question

A resistor dissipates 100 W at voltage V. If voltage is doubled, power dissipated is:
  1. A
    200 W
  2. B
    400 W
    Correct
  3. C
    50 W
  4. D
    100 W

Correct answer

400 W

Explanation

P = V²/R. If V → 2V: P → 4V²/R = 4×100 = 400 W.

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