SeriesParallel Circuits MCQs
Practice and Learn through MCQs and Quizzes. W3Definitions.com have 11 SeriesParallel Circuits MCQs
If a series–parallel circuit has all 30ohm 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