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An electron follows a helical path in a uniform magnetic field of magnitude 5 T. The pitch of the path (d in the figure below) is 6 μm, and the magnitude of the magnetic force on the electron is 3×10−15 N. What is the electron's speed (in km/s)?

An electron follows a helical path in a uniform magnetic field of magnitude 5 T. The pitch of the path (d in the figure below) is 6 μm, and the magnitude of the magnetic force on the electron is 3×10−15 N. What is the electron's speed (in km/s)?

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An electron follows a helical path in a uniform magnetic field of magnitude 5 T . The pitch of the path ( d in the figure below) is 6 μ m , and the magnitude of the magnetic force on the electron is 3 × 10 − 15 N .
What is the electron's speed (in k m / s )? ◻

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