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An Electron Moving Perpendicular to a Uniform Magnetic Field of 3.2

Question 31

Multiple Choice

An electron moving perpendicular to a uniform magnetic field of 3.2 × 10-2 T moves in a circle of radius 0.40 cm.How fast is this electron moving? (mel = 9.11 × 10-31 kg, An electron moving perpendicular to a uniform magnetic field of 3.2 × 10<sup>-2</sup> T moves in a circle of radius 0.40 cm.How fast is this electron moving? (m<sub>el</sub> = 9.11 × 10<sup>-31</sup> kg, A) 2.2 × 10<sup>7</sup> m/s B) 1.9 × 10<sup>-2</sup> m/s C) 1.9 × 10<sup>-30</sup> m/s D) 3.0 × 10<sup>6</sup> m/s E) 8.0 × 10<sup>6</sup> m/s


A) 2.2 × 107 m/s
B) 1.9 × 10-2 m/s
C) 1.9 × 10-30 m/s
D) 3.0 × 106 m/s
E) 8.0 × 106 m/s

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