Question

On a moving electron , electric field E and the magnetic flux density B are so applied that the resultant force on yhe electron bis zero . Then the velocity of electron will be ​

Answer 1

Answer:

If net force by electric and magnetic field is balanced then particle will keep on moving with uniform velocity. In that case: E=vB

If no electric field is present then in spite of presence of magnetic field there will be only change in direction of the particle. As it will start executing circular motion. Hence option C is correct.

If there isn't any electric or magnetic field present then the particle will keep on moving its uniform velocity.