Home Physics Electrostatics Potential & Capacitance Charge and Coulombs Law Four metal conductors having different shape…
Physics Electrostatics Potential & Capacitance Charge and Coulombs Law MCQ (Single Correct)

Four metal conductors having different shapes

(1) A sphere (2) Cylindrical

(3) Pear (3) Lightning conductor

are mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is

A
1
B
2
C
3
D
4

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Text Solution

Verified by Experts
The correct answer is:
A

In case of spherical metal conductor the charge quickly spreads uniformly over the entire surface because of which charges stay for longer time on the spherical surface. While in case of non-spherical surface, the charge concentration is different at different points due to which the charges do not stay on the surface for longer time.

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