Which of the following is true concerning a charge moving through a constant mag

Question

Which of the following is true concerning a charge moving through a constant magnetic field?
A. The direction of the force depends upon the angle between the velocity and the magnetic field
B. The force is always perpendicular to both the velocity and the magnetic field
C. The force is always perpendicular to the velocity and parallel to the magnetic field
D. The force is always parallel to both the velocity and the magnetic field
E. The force is always parallel to the velocity and perpendicular to the magnetic field

Explanation / Answer

Since magnetic force is given by the expression Fb=qv x B magnetic force is always perpendicular to both velocity and magnetic field!

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