Exam 24: Alternating-Current Circuits

A series RLC circuit has a 100-Ω resistor, 2.0-mH inductor and a 4.0-μF capacitor connected across a 120-V rms AC source at (1000/π) Hz. What is the power factor of this circuit?

A 120-V rms signal at 60 Hz is applied across a 30-mH inductor and a 100-Ω resistor. What is the rms value of the current in this circuit?

A 120 V-rms voltage is applied across a 6.0-μF capacitor and a 100-Ω resistor. If the frequency of the generator is 60 Hz, what is the rms value of the current in the circuit?

A 120-V rms signal at 60.0 Hz is applied across a 30.0-mH inductor and a resistor. If the rms value of the current in this circuit is 0.600 A, what is the value of the resistor?

A series RLC circuit has a 100-Ω resistor, a 0.100-μF capacitor, and a 2.00-mH inductor connected across a 120-V rms ac source operating at resonant frequency. What is the rms value of the voltage across the capacitor?

The power factor of an RL circuit with a 100-Ω resistor and a certain inductor is 0.60. What is the impedance of the circuit?

A 120-V rms voltage at 60 Hz is applied across an RC circuit. The rms value of the current in the circuit is 0.60 A and it leads the voltage by 60°. What is the value of the capacitance in this circuit?

A 120-V rms voltage at 1000 Hz is applied to a resistor and an inductor in series. If the impedance of this circuit is 110 Ω, what is the maximum value of the current?

What inductance must be put in series with a 200-Ω resistor at 4000 Hz to have a total impedance of 240 Ω?

An electric circuit consists of a resistor connected across the terminals of an ac generator. How does the power dissipated in the resistor change as the frequency in the generator decreases?

A series RLC circuit has a 100-Ω resistor, a 0.100-μF capacitor and a 2.00-mH inductor connected across a 120-V rms ac voltage source operating at (1000/π) Hz. What is the resonant frequency of this circuit?

A 6.0-μF capacitor is connected to an ac signal with a frequency of 60 Hz. If the maximum voltage applied to the capacitor is 8.0 V, what is the capacitive reactance?

Consider an RLC circuit that is driven by an AC applied voltage. At resonance,

Which one of the following is the correct expression for the sinusoidal ac voltage?

A series RLC circuit has a 100-Ω resistor, 4.00-mH inductor and a 0.100-μF capacitor connected across a 120-V rms ac source at the resonant frequency. What is the power dissipated by the circuit?

A 120-V rms voltage at 60 Hz is applied across an inductor and a 200-Ω resistor. If the impedance of this circuit is 216 Ω, what is the rms value of the current?

Which of the following is the correct expression for the SI units of the capacitive reactance?

A 20.0-mH inductor is connected in series with a 100-Ω resistor at 1000 Hz. What is the phase angle of this circuit?

A 120-V rms voltage at 60.0 Hz is applied across a capacitor and a 100-Ω resistor. If the impedance of this circuit is 200 Ω, what is the average power of this circuit?

The maximum voltage of an ac signal is 8.0 V. What is the rms value of this voltage?