Question

two points charges +4q and +q are separated by a distance 'a' apart. where should a third charge 'e' be placed that the system be in equilibrium?​

Answer 1

Answer:

k=1/(4 pie permitivity of free space)

You can get your ans by this

Corrected answer.

K4qe÷(a-x)2=kqe÷x^2

find the value of x which is the distance from the small charge.

note: the equilibrium position always lies near smaller charge.