Electrostatics 1 Question 21

22. A ring of radius R carries a uniformly distributed charge +Q. A point charge −q is placed on the axis of the ring at a distance 2R from the centre of the ring and released from rest. The particle executes a simple harmonic motion along the axis of the ring.

(1988, 2M)

Show Answer

Answer:

Correct Answer: 22. F

Solution:

  1. Motion is simple harmonic only when charge −q is not very far from the centre of ring on its axis. Otherwise motion is periodic but not simple harmonic in nature.
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