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Concepts Of Physics MCQ Edition [Volume 2]PhysicsGauss's Law

When a metallic particle with zero net charge is positioned close to a finite metal plate carrying a positive charge, the electric force acting on the particle will be

Options

  1. Atowards the plate
  2. Baway from the plate
  3. Cparallel to the plate
  4. Dzero

Correct answer

A. towards the plate

Step-by-step solution

When a neutral metallic particle is placed near a positively charged finite metal plate, electrostatic induction occurs. The positive charge on the plate attracts the free electrons within the metallic particle. As a result, the side of the particle closer to the plate acquires a net negative induced charge, while the side farther away acquires an equal net positive induced charge. Since the electric field produced by a finite charged plate decreases with distance, the attractive force exerted on the closer negativ

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