1. The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is_____________?
A. 20,000 Ω
B. 100,000 Ω
C. 200,000 Ω
D. 1,000,000 Ω
✅ The correct answer is option B.
Series-parallel Circuits MCQs
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
✅ The correct answer is option B.
3. 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__________?
A. 25 %
B. 20 %
C. 100 %
D. 50 %
✅ The correct answer is option B.
4. 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
✅ The correct answer is option C.
5. 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
✅ The correct answer is option A.
6. On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?
A. 1 V
B. 50 V
C. 500 V
D. 1,000 V
✅ The correct answer is option D.
7. 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
✅ The correct answer is option D.
8. 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____________?
A. 680 Ω
B. 1,029 Ω
C. 200 Ω
D. 880 Ω
✅ The correct answer is option B.
9. 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.
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___________?
A. 2 V, 4 V
B. 2 V, 2 V
C. 2 V, 6 V
D. 4 V, 6 V
✅ The correct answer is option A.