A Student's Guide to Maxwell's Equations
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Problem 3.5

A circular loop of wire of radius 20 cm and resistance of 12 Ω surrounds a 5-turn solenoid of length 38 cm and radius 10 cm as shown in the figure.  If the current in the solenoid increases linearly from 80 to 300 mA in 2 seconds, what is the maximum current induced in the circular wire?



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