A charged particle moving with a velocity \(\vec{v}\) enters a region of uniform magnetic field \(\vec{B}\). If the velocity has a component parallel to \(\vec{B}\), which of the following quantities is independent of \(\overrightarrow{\mid v} \mid\)?
A. Period T of its circular motion
B. Pitch p of its helical path
C. Radius r of its helical path
D. Both p and T
Answer:A
A charged particle moving with a velocity \(\vec{v}\) enters a region of uniform magnetic field \(\vec{B}\). If the velocity has a component parallel to \(\vec{B}\), which of the following quantities is independent of \(\overrightarrow{\mid v} \mid\)?
A. Period T of its circular motion B. Pitch p of its helical path C. Radius r of its helical path D. Both p and T