FIGURE 27-3
-Fig. 27-3 shows a small positive charge q moving toward a long current-carrying wire. Which of the arrows labeled A to D correctly represents the direction of the magnetic force applied on the charge?

Question

FIGURE 27-3 
-Fig. 27-3 shows a small positive charge q moving toward a long current-carrying wire. Which of the arrows labeled A to D correctly represents the direction of the magnetic force applied on the charge?

Quizplus · Accepted Answer

The magnetic force on a moving charge is given by the right-hand rule for the cross product of velocity and magnetic field. The magnetic field around a current-carrying wire circles the wire, and the force is perpendicular to both the velocity of the charge and the magnetic field.

FIGURE 27-3 -Fig. 27-3 Shows a Small Positive Charge Q Moving Toward