An Electron Moves with a Speed Of $5.0 \times 104 \mathrm {~m} / \mathrm { s }$

question 131

Multiple Choice

An electron moves with a speed of $5.0 \times 104 \mathrm {~m} / \mathrm { s }$ perpendicular to a uniform magnetic field of magnitude $0.20 \mathrm {~T}$ . What is the magnitude of the magnetic force on the electron? $\left( e = 1.60 \times 10 ^ { - 19 } \right.$ C)

• A) \(5 \times 10 - 20 \mathrm {~N}\)
• B) \(2.6 \times 10 - 24 \mathrm {~N}\)
• C) zero
• D) \(4.4 \times 10 - 14 \mathrm {~N}\)
• E) \(1.6 \times 10 - 15 \mathrm {~N}\)

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