If an Electron Moves in a Magnetic Field

question 2

Multiple Choice

If an electron moves in a magnetic field,

• A) it always feels a force.
• B) it only feels a force if its velocity vector is parallel (or antiparallel) to the direction of the magnetic field.
• C) it only feels a force if its velocity vector is not parallel (or antiparallel) to the direction of the magnetic field.
• D) it does not feel a force if it is in motion, only if stationary.

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