If n small drops each of radius r coalesce to form a big drop of radius R, then
(i) (4/3) pR3= n(4p/3)r3
\ R = rn1/3
(ii) If each small drop has a charge q, then the charge on the big drop q’ = nq
(iii) If V is the potential of the small drop, then the potential of the big drop will be
(iv) If E is the electric field intensity at the surface of the small drop, then the electric field intensity
at the surface of the big drop will be
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