A Charged Particle Moves in a Region of Uniform Magnetic

Multiple Choice

A charged particle moves in a region of uniform magnetic field along a helical path (radius = 5.0 cm, pitch = 12 cm, period = 5.0 ms) . What is the speed of this particle as it moves along this path?

A) 67 m/s
B) 26 m/s
C) 63 m/s
D) 24 m/s
E) 87 m/s