What Is the Magnitude of the Magnetic Force on a Charged

Multiple Choice

What is the magnitude of the magnetic force on a charged particle (Q = 5.0 μC) moving with a speed of 80 km/s in the positive x direction at a point where Bx = 5.0 T, By = −4.0 T, and Bz = 3.0 T?

A) 2.8 N
B) 1.6 N
C) 1.2 N
D) 2.0 N
E) 0.4 N