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A conducting sphere A having a radius a is charged to a potential V 1 . Now it is surrounded by another conducting spherical shell of the radius b . The potential V 2 acquired by the sphere A after it is connected to shell B by a thin conducting wire is -

Options

  1. AV 1 a b
  2. BV 1 b a
  3. CV 1 ( a + b ) b
  4. DV 1 a a + b

Correct answer

A. V 1 a b

Step-by-step solution

V 1   =   K q a V 2   =   K q ′ b   =   K q b =   K V 1 a K b   =   V 1 a b

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