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Question 31564
JEE Physics · Hard

Capacitance: Energy After Parallel Connect MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Energy After Parallel ConnectHardQuestion 31564

Question

After connecting the capacitors in the previous question, energy stored is:
  1. A
    16 mJ
    Correct
  2. B
    40 mJ
  3. C
    20 mJ
  4. D
    8 mJ

Correct answer

16 mJ

Explanation

U_f = ½×5μF×(80)² = ½×5×10⁻⁶×6400 = 16 mJ. Energy lost = 24 mJ (heat).

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