THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Magnetic force on a charge
Read velocity components from a helix
A particle moves helically in a uniform magnetic field. The radius is 0.040 m and the axial advance in one full turn is 0.120π m.
What is the ratio |v_parallel|/v_perpendicular?
Organize the givens & assumptions
- Helix radius: 0.040 m
- Pitch magnitude: 0.120π m per revolution
Magnetic force only; constant uniform field; nonrelativistic motion; the pitch is measured along the field axis.
- A
- B
- C
- D
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