Physics-
General
Easy

Question

Two spherical conductors each of capacity C are charged to potentials V and negative V. These are then connected by means of a fine wire. The loss of energy will be

  1. Zero    
  2. fraction numerator 1 over denominator 2 end fraction C V to the power of 2 end exponent    
  3. C V to the power of 2 end exponent    
  4. 2 C V to the power of 2 end exponent    

The correct answer is: C V to the power of 2 end exponent


    capital delta V equals fraction numerator 1 over denominator 2 end fraction fraction numerator C cross times C over denominator left parenthesis C plus C right parenthesis end fraction vertical line V minus left parenthesis negative V right parenthesis vertical line to the power of 2 end exponent equals C V to the power of 2 end exponent

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