Question

A certain charge Q has to be divided into two
parts q and Q-q such that when placed at a
given distance apart, the force between the
two must be maximum. The ratio Qlq is
(i) 4
(ii) 0.5
iii)
3/2
(iv) 2​

Answer 1

Answer:

0.5bbfcbnkhhffcvhjkhgcccbn

Answer 2

Answer:

let parts are sepereted at a distance of d

so repulsion force F= k q(Q-q)/d2

    here Q and d are constant so for maximum force differentiate the force w.r.t q

dF/dq = k/d2 [Q -2q]

for maximum force dF/dq=0

                            Q-2q=0

                             Q/q =2

Explanation: