A square of side has charges placed at its corners as follows: at and

PHYSICS · Single correct · CBSE · Physics · Electric Charges and Fields · Electric Charges and Fields

Problem

A square

ABCD

of side

a

has charges placed at its corners as follows:

+q

A

and

C

-q

B

and

D

. What is the magnitude of the net force on the charge at corner

A

? (a)

(\sqrt{2}+0.5)\,k q^{2}/a^{2}

(b)

k q^{2}/a^{2}

(c)

(\sqrt{2}-0.5)\,k q^{2}/a^{2}

(d)

\sqrt{2}\,k q^{2}/a^{2}