A long solenoid has 140 turnscm and carries current i an, Ask an Expert

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A long solenoid has 140 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.60 cm perpendicular to the solenoid axis. The speed of the electron is 0.056 c (c = speed of light). Find the current i in the solenoid.

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