Question

A charge is divided into two parts of and . If the Coulomb repulsion between them when they are separated, is to be maximum, the ratio of should be:

A

B

C

D

Medium
Solution
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Correct option is A)

Let parts are separated at a distance of 'd'
So repulsion force,
here, Q and d are constant so for maximum force differentiate the force w.r.t q,
For maximum force,
                   
                           
                                   

Solve any question of Electric Charges and Fields with:-
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