Series-Parallel Circuits problems
- 1. 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
Options- A. 900 µA
- B. 9 mA
- C. 90 mA
- D. 800 µA Discuss
Correct Answer: 900 µA
- 2. 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?
Options- A. 0.57 V
- B. 6 V
- C. 12 V
- D. 5.7 V Discuss
Correct Answer: 5.7 V
- 3. The parallel combination of a 470 Ω resistor and a 1.2 kΩ resistor is in series with the parallel combination of three 3 kΩ resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of
Options- A. 470 Ω or 1.2 kΩ
- B. 3 kΩ
- C. 470 Ω
- D. 1.2 kΩ Discuss
Correct Answer: 470 Ω
- 4. A balanced Wheatstone bridge consists of an RV of 3,500 Ω, an R2 of 200 Ω, and an R3 of 680 Ω. The value of RUNK is
Options- A. 680 Ω
- B. 1,029 Ω
- C. 200 Ω
- D. 880 Ω Discuss
Correct Answer: 1,029 Ω
- 5. 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
Options- A. 138 Ω
- B. 1,389 Ω
- C. 5,700 Ω
- D. 880 Ω Discuss
Correct Answer: 1,389 Ω
- 6. The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage
Options- A. decreases
- B. increases
- C. remains the same
- D. becomes zero Discuss
Correct Answer: decreases
- 7. A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is
Options- A. 12 V
- B. 24 V
- C. 0 V
- D. 6 V Discuss
Correct Answer: 12 V
- 8. The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is
Options- A. 15,000 Ω
- B. 150,000 Ω
- C. 1,500,000 Ω
- D. 15,000,000 Ω Discuss
Correct Answer: 1,500,000 Ω
- 9. The parallel combination of a 470 Ω resistor and a 1.5 kΩ 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 kΩ resistor is
Options- A. 25%
- B. 20%
- C. 100%
- D. 50% Discuss
Correct Answer: 20%
- 10. A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are
Options- A. 2 V, 4 V
- B. 2 V, 2 V
- C. 2 V, 6 V
- D. 4 V, 6 V Discuss
Correct Answer: 2 V, 4 V
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