An Electron Moves with a Speed of 8

question 103

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 xy-plane. Calculate the magnitude of the magnetic force on the electron. (e = 1.60 × 10^-19C)

• 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)0N