If 'n' identical water drops (assumed spherical each) each charged to a potential…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

If 'n' identical water drops (assumed spherical each) each charged to a potential energy

U

coalesce to form a single drop, the potential energy of the single drop is (Assume that drops are uniformly charged): (a)

n^{1/3} U

(b)

n^{2/3} U

(c)

n^{4/3} U

(d)

n^{5/3} U