NEET Physics Question - Electrostatics

Assertion (A): If a point charge be rotated in a circle around another stationary charge at the centre of the circle, the work done by electric field will be zero.

Reason (R): Work done by centripetal force is always zero.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Both (A) and (R) are true. (A) is true because the electric field is conservative and the path is equipotential. (R) is true as centripetal force is perpendicular to displacement (\(W = Fdr\cos 90^\circ = 0\)). However, (R) does not explain (A).

Rankers Physics

Work Done by Electric Field and Centripetal Force

Solution:

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