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COMEDK2014PhysicsCapacitance

A 10 mF capacitor has been charged to a potential of 100 ~V . Suddenly if it explodes, the energy given out is

Options

  1. A50 ~J
  2. B10⁵ ~J
  3. C50 ~mJ
  4. D10³ ~J

Correct answer

A. 50 ~J

Step-by-step solution

Given, capacitance, C=10 mF =10⁻² ~F Potential, V=100 ~V When capacitor explodes, then its whole stored potential energy is given out in the form of heat and lightning. E_ out = 1 2 C V²= 1 2 10⁻² (100)²=50 ~J

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