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Magnetic Fields for a Long Solenoid

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A long solenoid has 1400 turns per meter of length, and it carries a current of 3.5 A. A small circular coil of wire is placed inside the solenoid with the normal to the coil oriented at an angle of 90 degrees with respect to the axis of the solenoid. he coil consists of 50 turns, has an area of 1.2 x 10^-3 m^2, and carries a current of 0.50 A. What is the torque exerted on the coil?

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The solution calculates the torque exerted on a coil.

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A long solenoid has 1400 turns per meter of length, and it carries a current of 3.5 A. A small circular coil of wire is placed inside the solenoid with the normal to the coil oriented at an angle of 90 degrees with respect to the axis of the solenoid. The coil consists of 50 turns, has an area of 1.2 x 10^-3 m^2, and carries a current of 0.50 ...

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