- A. True
- B. False
Series Parallel Circuits
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A Wheatstone bridge is often shown in a “diamond” configuration.
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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
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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
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Using Kirchhoff’s voltage law, you can find the voltages across certain parts of a series-parallel circuit.
- A. True
- B. False
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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
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The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is_____.
- A. 1,650 Ω
- B. 1,078 Ω
- C. 77.8 Ω
- D. 778 Ω
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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_____.
- A. 470 Ω or 1.2 kΩ
- B. 3 kΩ
- C. 470 Ω
- D. 1.2 kΩ
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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
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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
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Using the current-divider formula, you can find the current in any branch of a series-parallel circuit.
- A. True
- B. False