Current and potential difference Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. A current of 2.0 A flows for 10 s. What charge flows?
- A. 5 C
- B. 20 C
- C. 0.2 C
- D. 12 C
2. What is the direction of conventional current?
- A. Positive terminal to negative terminal
- B. Negative terminal to positive terminal
- C. It changes direction all the time
- D. It depends on the lamp
3. 12 J of energy are transferred when 4 C of charge pass through a lamp. What is the potential difference?
- A. 48 V
- B. 0.33 V
- C. 8 V
- D. 3 V
4. How should a voltmeter be connected to measure the p.d. across a lamp?
- A. In series with the lamp
- B. In parallel with the lamp, in a separate branch
- C. Anywhere in the circuit
- D. It must replace the lamp
5. What is a battery?
- A. A single cell
- B. A device that creates charge
- C. Two or more cells connected together
- D. A component that resists current