1.

120D 1.0X IUC16. A charge Q is to be divided into two partssuch that the force between them ismaximum. They should be divided as

Answer»

let parts are sepereted at a distance of d

so repulsion force F= k q(Q-q)/d^2

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

dF/dq = k/d^2[Q -2q]

for maximum force dF/dq=0

Q-2q=0

Q/q =2



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