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COMEDK2017PhysicsElectrostatics

Four metal conductors having different shapes a sphere, cylindrical, pear, lightning conductor are mounted on insulating stands and charge(d) The one which is best suited to retain the charges for a longer time is

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

A. 1

Step-by-step solution

In case of spherical metal conductor, the charges quickly spread over its entire surface uniformly because of which charges can stay for longer time on spherical conductor. While in case of non-spherical surfaces, charge concentration is different at different points due to which the charges do not stay on the surfaces for longer time.

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