RLC Circuits: The figure shows a series ac circuit. The inductor has a reactance of 60 ? and an inductance of 150 mH. A 50-? R and a capacitor C whose reactance is 90 ? are also in the circuit, and the rms current in the circuit is 1.5 A. What is the rms voltage of the source? 
A. 87 V
B. 84 V
C. 81 V
D. 78 V
E. 75 V
Answer: A
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