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Physics · Oct / Nov 2019 · Paper 12 · Question 30

5054Electrical charge

A metal plate X is attached to earth by a battery. The plate has a positive charge. A second metal plate Y is initially uncharged and connected to earth. This plate is positioned parallel to X. [diagram showing plates X and Y, battery and earth connections] What happens as Y is brought closer to X?

  1. AElectrons flow from Y to earth only.
  2. BElectrons flow to Y from earth only.
  3. CProtons flow from Y to earth and electrons flow to Y from earth.
  4. DProtons flow to Y from earth and electrons flow from Y to earth.

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Correct answer: B. Electrons flow to Y from earth only.

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