An Electron Is Moving at a Speed of 4

Multiple Choice

An electron is moving at a speed of 4.8 × 10⁶ m/s at an angle of 30.0° with respect to a uniform magnetic field of 9.2 × 10^-4 T.What is the radius of the resulting helical path? (m_e = 9.11 × 10^-31 kg,q_e = 1.60 × 10^-19 C)

A) 2.6 cm
B) 3.8 cm
C) 5.5 cm
D) 1.5 cm
E) 2.9 cm