Force on a Moving Charge: An electron moves with a speed of 5.0 × 104 m/s perpendicular to a uniform magnetic field of magnitude 0.20 T. What is the magnitude of the magnetic force on the electron? (e = 1.60 × 10-19 C)
A. 4.4 × 10-14 N
B. 1.6 × 10-15 N
C. 5 × 10-20 N
D. 2.6 × 10-24 N
E. zero
Answer: B
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