The corners , and of a square are occupied by charges , and , respectively. The side…

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

Problem

The corners

A, B, C

, and

D

of a square are occupied by charges

q, -q, 2Q

, and

Q

, respectively. The side of square is

2b

. The field at the midpoint of side

CD

is zero. What is the value of

q/Q

? (1)

5\sqrt{5}/2

(2)

2\sqrt{2}/5

(3)

2/5

(4)

5/2