Series and parallel circuits and conservation laws Quiz
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5 questions, one answer each
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1. Three resistors of 2.0 Ω, 3.0 Ω and 5.0 Ω are connected in series. What is their combined resistance?
- A. 0.97 Ω
- B. 10 Ω
- C. 30 Ω
- D. 3.3 Ω
2. Two 10 Ω resistors are connected in parallel. What is their combined resistance?
- A. 5.0 Ω
- B. 10 Ω
- C. 20 Ω
- D. 0.20 Ω
3. A 12 V supply is connected across two resistors in series. The p.d. across one is 4.0 V. What is the p.d. across the other?
- A. 3.0 V
- B. 4.0 V
- C. 8.0 V
- D. 16 V
4. A current of 3.0 A reaches a junction and splits into two branches. The current in one branch is 1.2 A. What is the current in the other?
- A. 0.6 A
- B. 1.2 A
- C. 2.5 A
- D. 1.8 A
5. A 6.0 Ω and a 3.0 Ω resistor are connected in parallel across a 9.0 V supply. What is the current in the 3.0 Ω resistor?
- A. 3.0 A
- B. 1.0 A
- C. 1.5 A
- D. 4.5 A