MCQs on Series and Parallel Circuits
Q: A Voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
- 12 V
- 24 V
- 0 V
- 6 V
Answer: (1) 12 V
Q: Two 3.3 kΩ resistors are in series combination are in parallel with a 4.7 kΩ resistor. What will be the voltage across the 4.7 kΩ resistors if the voltage across one of the 3.3 kΩ resistors is 12 V
- 24 V
- 12 V
- 0 V
- 6 V
Answer: (1) 24 V
Q: The 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 3.3 kΩ resistor. The total resistance is
- 138 Ω
- 1,389 Ω
- 5,700 Ω
- 880 Ω
Answer: (2) 1,389 Ω
Q: 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?
- 1 MΩ
- 100 kΩ
- 1 kΩ
- 330 Ω
Answer: (1) 1 MΩ
Q: A certain Wheatstone bridge has the following resistor values: R1= 10 kΩ, R2 = 720 Ω and R4 = 2.4 kΩ. The unknown resistance is
- 24 Ω
- 2.4 Ω
- 300 Ω
- 3,000 Ω
Answer: (4) 3,000 Ω
Q: In a certain five-step R/2R ladder network, the smallest resistor value is
- Indeterminable
- 2 kΩ
- 10 kΩ
- 20 kΩ
Answer: (2) 2 kΩ
Q: A certain circuit is composed of two parallel resistors. The total resistance is 1,403 Ω. One of the resistors is 2 Ω. The other resistor value is
- 1,403 Ω
- 4.7 kΩ
- 2 kΩ
- 3,403 Ω
Answer: (2) 4.7 kΩ
Q: A voltage divider consists of ot two 100 kΩ resistors and a 12 V source. What will the voltage be if a load resistor of 1 MΩ is connected to the output?
- 0.57 V
- 6 V
- 12 V
- 5.7 V
Answer: (4) 5.7 V
Q: The parallel combination of a 1.5 kΩ resistor and 470 Ω resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 kΩresistor is
- 25 %
- 20 %
- 100 %
- 50 %
Answer: (2) 20 %
Q: On which of the following voltage range settings will a voltameter present minimum load on a circuit?
- 1 V
- 50 V
- 500 V
- 1,000 V
Answer: (4) 1,000 V
