A charged particle travels along a circle under the influence of possible constant electric and magnetic fields. Which of the following conditions is possible?

Step-by-step solution

For a charged particle to move in a circle, its speed must remain constant. This implies that the net work done by the fields on the particle must be zero at all times. The magnetic force F _m = q( v B ) is always perpendicular to the velocity v , so it does no work. The power delivered by the electric field is P = q E v . For the speed to be constant, we must have q E v = 0 at all times. Since the particle is moving in a circle, its velocity vector continuously changes direction in the plane of the circle. For the