A 500-EV Electron and a 300-EV Electron Trapped in a Uniform

question 17

Multiple Choice

A 500-eV electron and a 300-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field. What is the ratio of the radii of their orbits?

• A) 2.8
• B) 1.7
• C) 1.3
• D) 4.0
• E) 1.0

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