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Here is the problem which I am struggling on, please help me!

Problem: During a 75-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 5.7-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 ohms. The mutual inductance between the two coils is 3.2 mH.

1- What is the change in the primary current?

Please use great detail in explaining the solution. Thank you.

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Category:- Physics
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