Question: 9 . 1 2 The current in a 2 0 mH inductor is 1 0 cos ( 1 0 , 0 0 0 t +

9.12The current in a 20 mH inductor is
10cos(10,000t+30)A.
Calculate (a) the inductive reactance; (b) the impedance of the inductor; (c) the phasor voltage V; (d) the steady-state expression for the voltage across the inductor.

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