1.
In an RL circuit, the impedance is determined by both the resistance and the inductive reactance combined.

2.
When the frequency is decreased, the impedance of a parallel RL circuit

3.
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance decreases

4.
A filter passes certain frequencies and rejects others.

5.
If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit

6.
A 140 Ω resistor is in parallel with an inductor having 60 Ω inductive reactance. Both components are across a 12 V ac source. The magnitude of the total impedance is

7.
The phase angle (?) of a series RL circuit varies directly with frequency.

8.
When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle

9.
Total current in an RL circuit always lags the source voltage.

10.
A 1.5 kΩ resistor and a coil with a 2.2 kΩ inductive reactance are in series across an 18 V ac source. The power factor is

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