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Question

# Charge Q is distributed non-uniformly over a ring of radius R. P is a point on the axis of ring at a distance √3R from its centre. Which of the following is a wrong statement.

A
Potential at P is 2KqR
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B
Magnitude of electric field at P may be greater than 3KQ8R2
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C
Magnitude of electric field at P must be equal to 3KQ8R2
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D
Magnitude of electric field at P may be less than 3KQ8R2
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Solution

## The correct option is A Potential at P is 2KqRCharge =Qradius =RP at point on the axis of ring at a distance =√3R from its centred=√R2+3R2=2RV=Kq2R+3Kq2R=2KqR.

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