An Electron Which Moves with a Speed of 7

Multiple Choice

An electron which moves with a speed of 7.5 × 10³ m/s parallel to a uniform magnetic field of 0.40 T experiences a force of what magnitude? (e = 1.6 × 10−¹⁹ C)

A) 1.9 × 10−¹⁵ N
B) zero
C) 2.2 × 10−²⁴ N
D) 4.8 × 10−¹⁴ N