A. 0.57 V
B. 6 V
C. 12 V
D. 5.7 V
✅ The correct answer is option D.
Series-parallel Circuits MCQs
A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 kΩ. The other resistor value is____________?
A. 1,403 Ω
B. 4.7 kΩ
C. 2 kΩ
D. 3,403 Ω
✅ The correct answer is option B.
The parallel combination of a 6.8 kΩ resistor and a 10 kΩ resistor is in series with the parallel combination of a 2.2 kΩ resistor and a 1 kΩ resistor. A 100 V source is connected across the circuit. The resistor(s) with the greatest voltage drop is (are)___________?
A. 6.8 kΩ
B. 2.2 kΩ
C. 6.8 kΩ and 10 kΩ
D. 2.2 kΩ and 1 kΩ
✅ The correct answer is option C.
Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is____________?
A. 138 Ω
B. 1,389 Ω
C. 5,700 Ω
D. 880 Ω
✅ The correct answer is option B.
A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?
A. 12 V
B. 24 V
C. 0 V
D. 6 V
✅ The correct answer is option A.
A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?
A. 1 MΩ
B. 24 kΩ
C. 18 kΩ
D. 12 kΩ
✅ The correct answer is option D.
A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?
A. 1 MΩ
B. 100 kΩ
C. 1 kΩ
D. 330 Ω
✅ The correct answer is option A.
Three 10 kΩ resistors are connected in series. A 20 kΩ resistor is connected in parallel across one of the 10 kΩ resistors. The voltage source is 24 V. The total current in the circuit is___________?
A. 900 μA
B. 9 mA
C. 90 mA
D. 800 μA
✅ The correct answer is option A.
A 12 kΩ resistor, a 15 kΩ resistor, and a 22 kΩ resistor are in series with two 10 kΩ resistors that are in parallel. The source voltage is 75 V. Current through the 15 kΩ resistor is approximately___________?
A. 14 mA
B. 1.4 mA
C. 5 mA
D. 50 mA
✅ The correct answer is option B.
A certain Wheatstone bridge has the following resistor values: R1 = 10 kΩ, R2 = 720 Ω, and R4 = 2.4 kΩ. The unknown resistance is_____________?
A. 24 Ω
B. 2.4 Ω
C. 300 Ω
D. 3,000 Ω
✅ The correct answer is option D.