A Proton Has a Speed of 3

question 34

Multiple Choice

A proton has a speed of 3.0 × 10⁶ m/s in a direction perpendicular to a uniform magnetic field, and the proton moves in a circle of radius 0.20 m. What is the magnitude of the magnetic field?

• A)0.040 T
• B)0.080 T
• C)0.16 T
• D)0.24 T
• E)0.32 T

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