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Question

If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)

reading of ammeter at this instant

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

The correct answer is: fraction numerator q b V over denominator x to the power of 2 end exponent end fraction

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If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)

Net charge on surface of conductor at this instant

If a charge q is moving towards the centre of an earthed conducting sphere of radius b with uniform velocity v. Distance of two points A and B from centre of sphere are 3a&2a. Conducting sphere is earthed with an ammeter and resistance in series (as shown)

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