MHT CET 2026 Physics question

Physics Electrostatic Potential and Capacitance MHT CET 2026

'n' small spherical drops of the same size which are charged to 'V' volt each coalesce to form a single big drop. The potential of a big drop is

(A)nV
(B)
(C)
(D)Correct

Answer: (D)

Solution

Let each small drop have radius and charge , so . Volume conservation: , so . Charge is conserved: . The potential of the big drop is \dfrac{kQ}{R}$ =

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Question ID VK-101001