A charged particle (m = 2.0 g, q = ?50 ?C) moves in a region of uniform field along a helical path (radius = 4.0 cm, pitch = 8.0 cm) as shown. What is the angle between the velocity of the particle and the magnetic field?
A. 27°
B. 72°
C. 63°
D. 18°
E. 58°
Answer: B
Physics & Space Science
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