Electrostatics Question 163

Question: Four charges are arranged at the corners of a square $ ABCD $ . The force on the charge kept at the centre O is [NCERT 1983; BHU 1999]

Options:

A) Zero

B) Along the diagonal $ AC $

C) Along the diagonal $ BD $

D) Perpendicular to side $ AB $

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Answer:

Correct Answer: C

Solution:

We put a unit positive charge at O. Resultant force due to the charge placed at A and C is zero and resultant charge due to B and D is towards D along the diagonal BD.



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