An Electron Moves with a Speed of 8

question 15

Multiple Choice

An electron moves with a speed of 8.0 × 10⁶ m/s along the +x-axis. It enters a region where there is a magnetic field of 2.5 T, directed at an angle of 60° to the +x-axis and lying in the x-y plane. Calculate the magnitude of the magnetic force on the electron.

• A) 2.8 × 10^-10 N
• B) 3.2 × 10^-10 N
• C) 2.8 × 10^-12 N
• D) 3.2 × 10^-12 N
• E) 0 N

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