LRC Series Circuits: a Series Circuit Consists of Ac Source

question 27

Multiple Choice

LRC series circuits: A series circuit consists of ac source, a 90-Ω resistor, a 0.80-H inductor, and an 80-μF capacitor. The frequency of the source is adjusted so that the capacitive reactance is equal to twice the inductive reactance. What is the frequency of the source?

• A) 14 Hz
• B) 13 Hz
• C) 16 Hz
• D) 17 Hz
• E) 19 Hz

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