Series-Parallel Circuits MCQs
Practice and Learn through MCQs and Quizzes. W3Definitions.com have 11 Series-Parallel Circuits MCQs
If a series–parallel circuit has all 30-ohm resistors, what is the total resistance when R1 is in series with a parallel circuit consisting of R2 and R3?
- A. 10 ohms
- B. 20 ohms
- C. 45 ohms
- D. 90 ohms
- Correct Answer: Option C
If a Wheatstone bridge is balanced, a voltmeter in the center of the bridge will read:
- A. the same as the source voltage
- B. half the source voltage
- C. zero volts
- D. twice the source voltage
- Correct Answer: Option C
If four 10 k resistors are in series with a single 20 k resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________.
- A. increases
- B. decreases
- C. remains the same
- D. drops to zero
- Correct Answer: Option B
If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?
- A. increases
- B. decreases
- C. remains the same
- D. cannot tell
- Correct Answer: Option B
In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2’s voltage will:
- A. increase
- B. decrease
- C. remain the same
- D. cannot tell
- Correct Answer: Option B
Series components in a series–parallel circuit may be in series with other _______________ components, or with other _______________ components.
- A. individual, combinations of
- B. series, parallel
- C. parallel, series
- D. shunt, parallel
- Correct Answer: Option A
The current flowing through an unloaded voltage divider is called the:
- A. resistor current
- B. load current
- C. bleeder current
- D. voltage current
- Correct Answer: Option C
What is the total resistance of a circuit when R1 (7 k ) is in series with a parallel combination of R2 (20 k ), R3 (36 k ), and R4 (45 k )?
- A. 4 k
- B. 17 k
- C. 41 k
- D. 108 k
- Correct Answer: Option B
When a load is connected to a voltage divider, the total resistance of the circuit will:
- A. decrease
- B. double
- C. increase
- D. remain the same
- Correct Answer: Option A
With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the current of R2 if R1 is series connected with parallel circuit R2 and R3?
- A. 200 mA
- B. 800 mA
- C. 600 mA
- D. 400 mA
- Correct Answer: Option D
With 6 V applied, what is the voltage across R2 of a parallel combination of R2 (1 k ), R3 (2 k ), and R4 (1 k ) in series with R1, whose value is 2 k ?
- A. 1 V
- B. 3 V
- C. 5 V
- D. 6 V
- Correct Answer: Option A