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RL CIRCUITS

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

55.15Ω
90Ω
200Ω
5.51Ω

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RL Circuits
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance

increases
cannot be determined without values
does not change
decreases

ANSWER DOWNLOAD EXAMIANS APP

RL Circuits
In a parallel RL circuit, there are 3 A rms in the resistive branch and 3 A rms in the inductive branch. The total rms current is

6 A
4.24 A
42.4 A
424 mA

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RL Circuits
A 47Ω resistor is in series with an inductive reactance of 120Ω across an ac source. The impedance, expressed in polar form, is

47 angle 68.6°
120 angle 68.6°
129 angle 68.6°
129 angle 31.4°

ANSWER DOWNLOAD EXAMIANS APP

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

cannot be determined
increases
decreases
is not affected

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