An Electron Moves with a Speed of 3

question 47

Multiple Choice

An electron moves with a speed of 3.0 × 10⁴ m/s perpendicular to a uniform magnetic field of 0.40 T.What is the magnitude of the magnetic force exerted on the electron? (e = 1.60 × 10^-19C)

• A)4.8 × 10^-14 N
• B)1.9 × 10^-15 N
• C)5 × 10^-20 N
• D)2.2 × 10^-24 N

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