A positive charge Q is uniformly distributed along a circular ring of radius R. A small test charge q is placed at the centre of the ring. Which of the following statements is correct?

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Physics · Electric Field and Charges

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

If q < 0, it will perform simple harmonic motion for small displacements along the axis of the ring.

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Answer 1

If q > 0, it will perform simple harmonic motion for small displacements along the axis of the ring.

Answer 2

If q < 0, it will be in stable equilibrium for small displacements in the plane of the ring.

Answer 3

If q < 0, it will perform simple harmonic motion for small displacements along the axis of the ring.

Answer 4

The electric field at the centre of the ring is non-zero.

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