An Electron Moving Perpendicular to a Magnetic Field of 2

question 13

Multiple Choice

An electron moving perpendicular to a magnetic field of 2.2 × 10^-2 T moves in a circle of certain radius. If the electron is moving with a speed of 1.5 × 10⁷ m/s, what is the radius of the circle?

• A) 1.5 × 10^-3 m
• B) 2.2 × 10^-4 m
• C) 2.2 × 10^-3m
• D) 3.9 × 10^-4 m
• E) 3.9 × 10^-3 m

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Attention

The act of concentrating on a particular object, task, or activity, while ignoring other stimuli.

Word Fragment

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The ability to recall visual images and details, an important aspect of memory that supports tasks like reading, navigation, and recognition.