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Question 31586
JEE Physics · Hard

Capacitance: Capacitor with Switch MCQ

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Capacitor with SwitchHardQuestion 31586

Question

Capacitor A (4 μF, 300 V) and uncharged capacitor B (12 μF) are connected positive-to-positive and negative-to-negative. Final charge on B is:
  1. A
    900 μC
    Correct
  2. B
    300 μC
  3. C
    600 μC
  4. D
    1200 μC

Correct answer

900 μC

Explanation

Initial Q = 1200 μC. Final V = 1200/(4+12) = 75 V. Charge on B = 12×75 = 900 μC.

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