A positively charged particle has a velocity in the negative z direction at point P. The magnetic force on the particle at this point is in the negative y direction. Which one of the following statements about the magnetic field at point P can be determined from this data? A) B_x is positive. B) B_z is positive. C) B_y is negative. D) B_y is positive. E) B_x is negative.

Question

Quizplus · Accepted Answer

Using the right-hand rule for the magnetic force on a moving charge, if the velocity is in the negative z direction and the force is in the negative y direction, the magnetic field must have a positive x component.

A Positively Charged Particle Has a Velocity in the Negative