An electron is traveling due south when it enters a uniform magnetic field directed due west. Which of the following statements concerning this situation is false?
a) The subsequent motion of the electron will be the same as if there were an electric field directed due west and no magnetic field present.
b) The electron will follow a curved path.
c) The direction of the magnetic force on the electron will vary with time.
d) The magnitude of the magnetic force will be constant with time.
e) The direction of the magnetic field and the direction of the magnetic force on the electron are perpendicular to one another.
Answer: a) The subsequent motion of the electron will be the same as if there were an electric field directed due west and no magnetic field present.
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