A 120 Ω resistor is in parallel with a capacitor with a capacitive r – McqOptions

MCQOPTIONS

1.	A 120 Ω resistor is in parallel with a capacitor with a capacitive reactance of 40 Ω. Both components are across a 12 V ac source. What is the magnitude of the total impedance?
A.	37.9 Ω
B.	3.7 Ω
C.	14,400 Ω
D.	4,800 Ω
Answer» B. 3.7 Ω

Discussion

No Comment Found

Related MCQs

If a 100 resistance is connected to a 100 capacitive reactance in a series circuit, the impedance equals 200 .
If the bandwidth of an low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz.
When a series circuit is used as a low-pass filter, the output is taken from across the capacitor.
The current lags the source voltage in a series circuit.
If the frequency increases in a parallel circuit, the phase angle decreases.
The output voltage from an high-pass filter increases as the frequency decreases.
A 10 k capacitive reactance equals a 100 µS capacitive susceptance.
If a series circuit contains a 120 k resistance and a 160 k capacitive reactance, the impedance equals _____.
In a series circuit, the phase difference between the capacitor and the resistor voltages ___.
If the impedance equals 2 k in a parallel circuit, the admittance equals ___.