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Question 31563
JEE Physics · Hard

Capacitance: Energy Before and After Parallel MCQ

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Energy Before and After ParallelHardQuestion 31563

Question

Initial energy stored before connecting the capacitors in Q12 above (session 4, Q2) is:
  1. A
    40 mJ
    Correct
  2. B
    20 mJ
  3. C
    80 mJ
  4. D
    16 mJ

Correct answer

40 mJ

Explanation

U_i = ½×2μF×(200)² = ½×2×10⁻⁶×40000 = 40 mJ.

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