Series Circuits problems
- 1. When one of three series resistors is removed from a circuit and the circuit is reconnected, the current
Options- A. increases
- B. increases by one-third
- C. decreases by one-third
- D. decreases by the amount of current through the removed resistor Discuss
Correct Answer: increases
- 2. If a 24 V and a 6 V battery are series opposing, the total voltage is
Options- A. 30 V
- B. 24 V
- C. 18 V
- D. 0 V Discuss
Correct Answer: 18 V
- 3. The total resistance of eight 5.6 kΩ resistors in series is
Options- A. 8 Ω
- B. 5,600 Ω
- C. 4,480 Ω
- D. 44,800 Ω Discuss
Correct Answer: 44,800 Ω
- 4. Which of the following series combinations dissipates the most power when connected across a 120 V source?
Options- A. one 220 Ω resistor
- B. two 220 Ω resistors
- C. three 220 Ω resistors
- D. four 220 Ω resistors Discuss
Correct Answer: one 220 Ω resistor
- 5. The total resistance of a circuit is 680 Ω. The percentage of the total voltage appearing across a 47 Ω resistor that makes up part of the total series resistance is
Options- A. 68%
- B. 47%
- C. 69%
- D. 6.91% Discuss
Correct Answer: 6.91%
- 6. Two 1.5 V cells are connected series opposing across two 100 Ω resistors in series. Total current flow is
Options- A. 15 mA
- B. 5 mA
- C. 2 mA
- D. 0 A Discuss
Correct Answer: 0 A
- 7. A string of five series resistors is connected across a 6 V battery. Zero voltage is measured across all resistors except R3. The voltage across R3 is
Options- A. 0 V
- B. 1.2 V
- C. 6 V
- D. 0.6 V Discuss
Correct Answer: 6 V
- 8. To measure the current out of the second resistor in a circuit consisting of four resistors, an ammeter can be placed
Options- A. between the second and third resistors
- B. at the negative terminal of the source
- C. between the third and fourth resistors
- D. at any point in the circuit Discuss
Correct Answer: at any point in the circuit
- 9. If a 6 V and a 9 V source are connected series aiding, the total voltage is
Options- A. 6 V
- B. 9 V
- C. 3 V
- D. 15 V Discuss
Correct Answer: 15 V
- 10. A 12 V battery is connected across a series combination of 68 Ω, 47 Ω, 220 Ω, and 33 Ω. The amount of current is
Options- A. 326 mA
- B. 16.3 mA
- C. 32.6 mA
- D. 163 mA Discuss
Correct Answer: 32.6 mA
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