Question: In a long straight solenoid with cross-sectional radius a and number of turns per unit length n a current varies with a constant velocity i

In a long straight solenoid with cross-sectional radius a and number of turns per unit length n a current varies with a constant velocity i A/s. Find the magnitude of the eddy current field strength as a function of the distance r from the solenoid axis. Draw the approximate plot of this function.

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