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MHT CET202121 Sep 2021Evening ShiftPhysicsElectrostaticsActual

A hollow metal sphere has a radius ' r '. The potential difference between a point on its surface and at a point at a distance ' 3 r ' from its center is ' V '. The electric intensity at the distance ' 3 r ' from the center of the sphere will be

Options

  1. AV 3 r
  2. B3 Vr
  3. CV r
  4. DV 6 r

Correct answer

D. V 6 r

Step-by-step solution

Let the charge on the sphere is Q. aligned & V = kQ r - kQ 3 r = 2 kQ 3 r & kQ = 3 Vr 2 & E = kQ (3 r )^2 = 1 (3 r )^2 3 Vr 2 = V 6 r aligned

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