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Question

The capacity of a condenser is 4×106 farad and its potential is 100 volts. The energy released on discharging it fully will be
  1. 0.04 J
  2. 0.02 J
  3. 0.025 J
  4. 0.05 J

A
0.02 J
B
0.04 J
C
0.025 J
D
0.05 J
Solution
Verified by Toppr

Energy released on descharging the capacitor
E=12CV2
=12×4×106×(100)2=0.02J

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