Q. Four metal conductors having different shapes A sphere Cylinder Pear 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
Explanation
(a) The sphere will retain the charge for longer time, because in case of spherical metal conductor, the charge quickly spreads uniformly over the entire surface.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.