Series and parallel circuits Quiz
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5 questions, one answer each
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1. Two lamps are in series with a 12 V battery. The p.d. across one lamp is 5.0 V. What is the p.d. across the other?
- A. 5.0 V
- B. 12 V
- C. 7.0 V
- D. 17 V
2. In a parallel circuit, the supply current is 0.90 A and one branch carries 0.40 A. What does the other branch carry?
- A. 0.50 A
- B. 1.3 A
- C. 0.40 A
- D. 0.90 A
3. A second identical resistor is added in parallel with a resistor. What happens to the total resistance?
- A. It increases
- B. It doubles
- C. It stays the same
- D. It decreases
4. Why are the lamps in a house wired in parallel?
- A. So they share the supply p.d. equally
- B. So each lamp gets the full p.d. and works independently
- C. So the current is the same through every lamp
- D. So the total resistance is as large as possible
5. Resistors of 6.0 Ω and 3.0 Ω are in series with an 18 V supply. What is the current?
- A. 2.0 A
- B. 6.0 A
- C. 3.0 A
- D. 0.50 A