Current is flowing in a ring of radius R in the anti-clockwise direction. An electron ismoving towards the centre of the ring in the downward direction inside the planewith velocity v. Its velocity will

Dear Hari,

In that case, the magnitude of the velocity will remain the same, but the direction of velocity will constantly change. The electron will be taking a circular path (in the plane of the ring) with constant velocity. This is because the magnetic field caused by the current causes a force to act on the moving electron which is at right angles to both the magnetic field and the velocity

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actually, the current flowing in anti-clockwise direction is forming a magnetic field which has North pole at the top of ring and south pole at the bottom. these poles can be known by applying Maxwell''s Right Hand Thumb Rule. Now , Since electron is moving downward therefore current is flowing upwards.

Therefore , the direction of current and magnetic field are at 180 degree.

By applying the formula F=qvBsin(angle) . SInce sin 180=0 

Therefore, force = 0 

therefore velocity remain same.