# RC Circuits

MCQsQuestion.com has 27 Question/Answers about Topic RC Circuits

## ______________ is shuttled back and forth between the source and load.

- A. True power
- B. Reactive power
- C. Apparent power
- D. Impedance power
- Correct Answer: Option B

## The hypotenuse of the right triangle of a vector diagram for R and XC is _______________.

- A. impedance
- B. current
- C. voltage
- D. power
- Correct Answer: Option A

## If the given circuit is used as a filter, the cutoff frequency is _____.

- A. 5 kHz
- B. 14.47 kHz
- C. less than 5 kHz
- D. more than 20 kHz
- Correct Answer: Option B

## The true power in the given circuit equals ___.

- A. 48.48 mW
- B. 296.93 mW
- C. 280.64 mW
- D. 96.98 mW
- Correct Answer: Option D

## Connecting the oscilloscope as shown in the given figure will _____.

- A. measure the voltage across the source
- B. measure the voltage across C1, R2, and C2
- C. short R1
- D. short C1, R2, and C2
- Correct Answer: Option D

## The phase angle in the given circuit equals___.

- A. 90°
- B. 36.87°
- C. 0°
- D. 53.13°
- Correct Answer: Option B

## The magnitude of the impedance in the given circuit equals _____.

- A. 17.14
- B. 24
- C. 70
- D. More information is needed in order to find the impedance.
- Correct Answer: Option B

## If the impedance equals 2 k in a parallel RC circuit, the admittance equals ___.

- A. More information is needed in order to find the admittance.
- B. 2 kS
- C. 4 kS
- D. 500 µS
- Correct Answer: Option D

## In a series RC circuit, the phase difference between the current and the source voltage _____.

- A. depends on the values of R and C
- B. equals 0°
- C. equals 90°
- D. depends on the amplitude of the input voltage
- Correct Answer: Option A

## In a series RC circuit, the phase difference between the capacitor and the resistor voltages ___.

- A. depends on the values of R and C
- B. equals 0°
- C. equals 90°
- D. depends on the value of the input voltage
- Correct Answer: Option C

## If a series RC circuit contains a 120 k resistance and a 160 k capacitive reactance, the impedance equals _____.

- A. 280 k
- B. 120 k
- C. 160 k
- D. 200 k
- Correct Answer: Option D

## When the resistance is greater than the capacitive reactance in a series RC circuit, the phase angle is ___.

- A. 0°
- B. between 0° and 45°
- C. between 45° and 90°
- D. 45°
- Correct Answer: Option B

## As frequency increases

- A. both series and parallel RC impedance decrease
- B. series RC impedance decreases and parallel RC impedance increases
- C. series RC impedance increases and parallel RC impedance decreases
- D. both series and parallel RC impedance increase
- Correct Answer: Option A

## Which of the following is the reference vector for parallel RC circuits?

- A. R
- B. V
- C. I
- D. XC
- Correct Answer: Option B

## Power that is measured in volt-amperes is called

- A. impedance power
- B. reactive power
- C. true power
- D. apparent power
- Correct Answer: Option D