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Four charges are arranged at the corners...

Four charges are arranged at the corners of a square `ABCD`, as shown in the adjoining figure, The force on a positive charge kept at the centre `O` is

A

Zero

B

Along the diagonal AC

C

Along the diagonal BD

D

Perpendicular to side AB

Text Solution

Verified by Experts

The correct Answer is:
C

Put a unit +ve charge at point O.
The resulting force due to the charge placed at point A and C is zero. And resulting force due to B and D is towards D along the diagonal BD.
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