Four metal conductors having different shapes1. A sphere2. Cylinder3. Pear 4. Lightning conductorAre 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