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Question

The capacity of a parallel plate condenser is 50 pF A magnetic field of 4 cross times 10 to the power of negative 7 end exponent T is produced at a distance of 10cm from the axis of the gap. The charging current is

  1. 0.1A    
  2. 0.2 A    
  3. 0.3 A    
  4. 0.15 A    

The correct answer is: 0.2 A

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