Series and Parallel Circuits Quiz
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5 questions, one answer each
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1. In a series circuit, how does the current compare at different points?
- A. It increases along the circuit
- B. It decreases along the circuit
- C. It is the same at every point
- D. It depends on the number of components
2. Two resistors of 4 ohm and 8 ohm are connected in series. What is their combined resistance?
- A. 4 ohm
- B. 8 ohm
- C. 12 ohm
- D. 2.7 ohm
3. How does the combined resistance of two resistors in parallel compare to the smaller individual resistance?
- A. It is always greater
- B. It is always less
- C. It is always equal
- D. It cannot be determined
4. At a junction in a circuit, 3 A and 2 A flow in. What must the total current flowing out of the junction be?
- A. 1 A
- B. 5 A
- C. 6 A
- D. It cannot be determined
5. Why is connecting lamps in parallel in a lighting circuit an advantage over connecting them in series?
- A. It uses less wire
- B. Each lamp gets full supply p.d. and a failed lamp does not switch off the others
- C. It makes the lamps brighter than any single lamp alone
- D. It reduces the total current drawn from the supply