B.5 Current and circuits Quiz
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5 questions, one answer each
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1. A charge of 90 C passes a point in 30 s. The current is:
- A. 0.33 A
- B. 3.0 A
- C. 60 A
- D. 2700 A
2. 12 J of work is done moving 4.0 C between two points. The pd is:
- A. 48 V
- B. 0.33 V
- C. 3.0 V
- D. 16 V
3. Two 6.0 Ω resistors in parallel have a combined resistance of:
- A. 12 Ω
- B. 6.0 Ω
- C. 3.0 Ω
- D. 0.33 Ω
4. A wire is replaced by one of the same material, twice the length and twice the cross-sectional area. Its resistance:
- A. doubles
- B. halves
- C. quadruples
- D. is unchanged
5. A cell of emf 9.0 V and internal resistance 1.0 Ω is connected to a 2.0 Ω resistor. The terminal pd is:
- A. 9.0 V
- B. 6.0 V
- C. 3.0 V
- D. 4.5 V