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?
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A. 10 ohms
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B. 20 ohms
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C. 45 ohms
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D. 90 ohms
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Correct Answer: Option C
If a Wheatstone bridge is balanced, a voltmeter in the center of the bridge will read:
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A. the same as the source voltage
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B. half the source voltage
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C. zero volts
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D. twice the source voltage
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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 ________.
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A. increases
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B. decreases
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C. remains the same
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D. drops to zero
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Correct Answer: Option B
If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?
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A. increases
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B. decreases
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C. remains the same
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D. cannot tell
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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:
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A. increase
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B. decrease
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C. remain the same
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D. cannot tell
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Correct Answer: Option B
Series components in a series–parallel circuit may be in series with other _______________ components, or with other _______________ components.
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A. individual, combinations of
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B. series, parallel
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C. parallel, series
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D. shunt, parallel
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Correct Answer: Option A
The current flowing through an unloaded voltage divider is called the:
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A. resistor current
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B. load current
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C. bleeder current
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D. voltage current
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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 )?
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A. 4 k
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B. 17 k
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C. 41 k
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D. 108 k
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Correct Answer: Option B
When a load is connected to a voltage divider, the total resistance of the circuit will:
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A. decrease
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B. double
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C. increase
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D. remain the same
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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?
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A. 200 mA
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B. 800 mA
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C. 600 mA
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D. 400 mA
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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 ?
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A. 1 V
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B. 3 V
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C. 5 V
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D. 6 V
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Correct Answer: Option A