A unit positive point charge of mass m is projected with a velocity v inside the tummel as shown. The tunnel has been made inside a uniformly charged non conducting sphere. The minimum velocity with which the point charge should be projected such that it can it reach the opposite end of the tunnel, is equal to:

A unit positive point charge of mass m is projected with a velocity V inside the tunnel as shown. The tunnel has been made inside a uniformly charged nonconducting sphere. The minimum velocity with which the point charge should be projected such that it can reach the opposite end of the tunnel is equal to

The minimum velocity v with which charge q should be projected so that it manages to reach the centre of the ring starting from the position shown in figure is

The minimum velocity v with which charge q should be projected so that it manages to reach the centre of the ring starting from the position shown in figure is

The adjoining figure represent a semi-circular loop of charge Q and of radius R .The minimum velocity with which a point mass m of charge -q should be projected so that it becoems free from the influence of the loop is

A particle of charge q is projected from point P with velocity v as shown. Choose the correct statement from the following.

A particle of charge q is projected from point P with velocity v as shown. Choose the correct statement from the following.

A charge +Q is uniformly distributed in a spherical volume of radius R. A particle of charge +q and mass m projected with velocity v_0 the surface of the sherical volume to its centre inside a smooth tunnel dug across the sphere. The minimum value of v_0 such tht it just reaches the centre (assume that thee is no resistance on the particle except electrostatic force) of he sphericle volume is