A very long straight solenoid with a cross-sectional area, Ask an Expert

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A very long, straight solenoid with a cross-sectional area of 5.75cm^2 is wound with 36 turns of wire per centimeter, and the windings carry a current of 0.275A . A secondary winding of 2 turns encircles the solenoid at its center. When the primary circuit is opened, the magnetic field of the solenoid becomes zero in 5.05*10^-2s.

What is the average induced emf in the secondary coil?

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Category:- Physics
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