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A ball carrying a positive charge hangs from a silk thread. If we keep a positive test charge q0 at a point and measure the force F on the test charge, then it can be said that the electric field strength E at the point will be

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Correct Answer is option (A)

As the positive charge q0 is brought near the ball due to the mutual repulsion the distance of ball from the charge increases hence the predicted field E is greater than the measured field F/q0(F decreases with increasing distance).

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