Force of attraction between two point charges Q and - Q separated by d metre is` F_(e )`. When these charges are placed on two identical spheres of radius R = 0.3 d whose centres are d metre apart, the force of attraction between them is :

Options

A. Greater than `F_(e)`
B. Equal to` F_(e)`
C. Less than `F_(e)`
D. None of these

Answer

A

Explanation

Seperation between the spheres is not too large as compared to their radius so due to induction effect redistribution of charge takes place . Hence effective charge separation decreases so force increases .