An Electron Moves with a Speed of 5

question 20

Multiple Choice

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^-19C)

• 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

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