Question

An AC generator supplies an rms voltage of 115 V at 60.0 Hz. It is connected in series with a 0.450 H inductor, a 3.20 μF capacitor and a 396 Ω resistor.

What is the impedance of the circuit?
7.69×10² ohm

You are correct.

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What is the rms current through the resistor?
1.50×10^-1 A

You are correct.

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What is the average power dissipated in the circuit?

Power is only dissipated in a resistor. Thus, you have to multiply the rms current times the rms voltage for the resistor.

Incorrect.

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What is the peak current through the resistor?

You can use an equation similar to Ohm's law for an RLC circuit. Remember the relation between peak and rms currents or voltages.

Incorrect.

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What is the peak voltage across the inductor?

Use an equation similar to Ohm's law that includes the inductive reactance.

Incorrect.

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What is the peak voltage across the capacitor?

Use an equation similar to Ohm's law that includes the capacitive reactance.

Incorrect.

Tries 1/20

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The generator frequency is now changed so that the circuit is in resonance. What is that new (resonance) frequency?

Answer 1