RLC Circuits: The figure shows a series ac circuit. The inductor has a reactance of 80 ? and an inductance of 220 mH. A 30-? resistor and a capacitor whose reactance is 80 ? are also in the circuit, and the rms current in the circuit is 2.0 A. What is the capacitance of the capacitor?
A. 34 ?F
B. 37 ?F
C. 32 ?F
D. 30 ?F
E. 27 ?F
Answer: A
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