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Four metal conductors having different shapes 1. A sphere 2. Cylinder 3. Pear 4. Lightning conductor Are mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is

Four metal conductors having different shapes
1. A sphere
2. Cylinder
3. Pear 
4. Lightning conductor
Are mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is 
 

Grade:12

1 Answers

Arun
25763 Points
2 years ago
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.
 
hence option A is correct

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