Two point charges and are placed a distance apart

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

Problem

Two point charges

+q

and

-q

are placed a distance

x

apart. A third charge is placed so that all three charges are in equilibrium. Then (1) The unknown charge is

-\frac{4q}{9}

(2) The unknown charge is

-\frac{9q}{4}

(3) It should be at

\frac{x}{3}

from the smaller charge between them (4) None of the above