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Question

Two electric charges q and -2q are placed at a distance 3a apart. The locus of points in the plane of the charges where the field potential is zero is:

A

straight line

B

circle

C

ellipse

D

hyperbola

Hard

Solution

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Correct option is
B

circle

Let at point (x, y) potential be zero.
then we have.
circle at center (-a, 0) with radius 2a.

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Video Explanation

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