An 805-turn wire coil of resistance 24.0 O is placed on top of a 7.40 cm long so

Question

An 805-turn wire coil of resistance 24.0 O is placed on top of a 7.40 cm long solenoid with N1 = 11500 turns, as in the figure below. Both coil and solenoid have cross-sectional areas of 1.35 10-4 m2.

(a) How long does it take the solenoid current to reach 0.632 times its maximum value?
s

(b) Determine the average back emf caused by the self-inductance of the solenoid during this interval. The magnetic field produced by the solenoid at the location of the coil is one-half as strong as the field at the center of the solenoid.
V

(c) Determine the average rate of change in magnetic flux through each turn of the coil during the stated interval.
V

(d) Find the magnitude of the average induced current in the coil.
A

Explanation / Answer

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