Series and Parallel Circuits MCQ Mock Test - Set 01 - ObjectiveBooks

# Practice Test: Question Set - 01

1. A voltage divider consists of two 100 kΩ resistors and a 12 V source. What will the output voltage be if a load resistor of 1 MΩ is connected to the output?
(A) 0.57 V
(B) 6 V
(C) 12 V
(D) 5.7 V

2. In a certain five-step R/2R ladder network, the smallest resistor value is 1 kΩ. The largest value is
(A) Indeterminable
(B) 2 kΩ
(C) 10 kΩ
(D) 20 kΩ

3. 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

4. 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

5. 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

6. Using Kirchhoff's voltage law, you can find the voltages across certain parts of a series-parallel circuit.
(A) True
(B) False

7. Using the current-divider formula, you can find the current in any branch of a series-parallel circuit.
(A) True
(B) False

8. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is
(A) 24 V
(B) 12 V
(C) 0 V
(D) 6 V

9. 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

10. 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

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