Force acting upon a charged particle kept between the plates of a charged condenser if F. IF one of the plates of the condenser is removed, force acting on the same will become
The excess (equal in number) of electrons that must be placed on each of two small spheres spaced 3 cm apart, with force of repulsion between the spheres to be 10-19N, is
A particle is moving in a vertical circle.The tensions the string when passing through two positions at angles 30° and 60° from vertical (lowest positions) are T1 and T2 respectively.Then