Question

Four particles enter a region of uniform magnetic field. Their trajectories are shown in figure. What are the signs of the charge of all four particles ?​

Answer 1

Answer:

Their trajectories are shown in figure, what are the signs of the charge of all four particles? X x X Particle A deflects to the right as it passes through the magnetic field, so we conclude that it is negatively charged. Particle B also deflects to the right, so it also must be negatively charged.

Answer 2

Answer:

A and B negative

C is positive