An industrial coil is modeled as a series combination of an inductance L and resistance R, as shown in Fig. 9.90. Since an ac voltmeter measures only the magnitude of a sinusoid, the following measurements are taken at 60 Hz when the circuit operates in the steady state:
|Vs| = 145 V, |V1| = 50 V, |Vo| = 110 V
Use these measurements to determine the values of L and R.

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80Ω 55Coil IL