Physics-
General
Easy

Question

Four initially uncharged thin, large, plane identical metallic plates A, B, C and D are arranged parallel to each other as shown. Now plates A, B, C and D are given charges Q,2Q,3Q and 4Q respectively. Plates A and D are connected by a metallic wire while plates B and C are connected by other metallic wire then after Electrostatic equilibrium is reached.

Charge on left surface of plate B will be

  1. zero
  2. fraction numerator 3 Q over denominator 2 end fraction
  3. fraction numerator negative 9 Q over denominator 2 end fraction
  4. fraction numerator 5 Q over denominator 2 end fraction

The correct answer is: fraction numerator 5 Q over denominator 2 end fraction

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