An Ac Circuit Has a 100- $\Omega$ Resistor in Series with A

question 215

Multiple Choice

An ac circuit has a 100- $\Omega$ resistor in series with a $4.9 - \mu \mathrm { F }$ capacitor and a $700 - \mathrm { mH }$ inductor. At what frequency does the circuit act like a pure resistance?

• A) \(86 \mathrm {~Hz}\)
• B) \(0.29 \mathrm { MHz }\)
• C) \(12 \mathrm { MHz }\)
• D) \(1.9 \mathrm { MHz }\)
• E) \(0.54 \mathrm { kHz }\)

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