Exam 24: Alternating-Current Circuits

A series 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 1000/π Hz.What is the rms voltage across the inductor?

As the frequency of the ac voltage across an inductor approaches zero,the inductive reactance of that coil

Consider a capacitor connected across the ac source.As the capacitance is increased,the current through the capacitor will

In an RLC ac circuit,the values of the inductance and capacitance are both doubled.As a result of this change,the resonance frequency of the circuit is

A pure capacitor is connected to an ac power supply.In this circuit,the current

The capacitive reactance of a 44-μF capacitor in an ac circuit is 6.0 × Ω.What is the frequency of the applied signal?

A 120-V rms voltage at 2000 Hz is applied to a 6.0-mH inductor,a 2.0-μF capacitor,and a 200-Ω resistor.What is the rms value of the current in this circuit?

What inductance is needed in series with a 4.7-μF capacitor so the circuit will oscillate at a frequency of 10 kHz?

What is the rms current through a 2.50-mH coil due to a 110-V rms,60-Hz source?

What size capacitor must be placed in series with a 40-mH coil so the circuit will oscillate with a frequency of 1000 Hz?

A simple ac circuit consists of an inductor connected across the terminals of an ac power source.If the frequency of the ac source is decreased by a factor of four,what happens to the reactance of the inductor?

What is the rms current through a 0.0010-μF capacitor at 1000 Hz and 5.0 V?

A 120-V rms voltage at 60.0 Hz is applied across an inductor,capacitor and a 100-Ω resistor in series.If the maximum value of the current in this circuit is 1.60 A,what is the rms value of the current in this circuit?

A 10-Ω resistor is connected to a 120-V ac power supply.What is the peak current through the resistor?

The inductor in a radio receiver carries a current of amplitude 0.200 A when an ac voltage of amplitude 2.40 V is across it at a frequency of 1400 Hz.What is the value of the inductance?

A series 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?

A series circuit has a 50-Hz ac source,a 40-Ω resistor,a 0.70-H inductor,and a 60-μF capacitor,as shown in the figure.The rms current in the circuit is 1.6 A.What is the voltage amplitude of the source?

What capacitance is needed in series with a 3.7-mH inductor so the circuit will oscillate at a frequency of 1000 Hz?

A series circuit consists of a 100-Ω resistor,a 10.0-μF capacitor,and a 0.350-H inductor.The circuit is connected to a 120-V rms,60-Hz power supply.What is the rms current in the circuit?

A series ac circuit has a resonance frequency of 9.0 kHz.If the inductor in the circuit has a value of 2.0 H,and the resistance is 75 Ω,what is the capacitance of the circuit?