Series and parallel circuits and power Quiz
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5 questions, one answer each
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1. Three 6.0 Ω resistors are connected in parallel. What is the total resistance?
- A. 18 Ω
- B. 6.0 Ω
- C. 3.0 Ω
- D. 2.0 Ω
2. A 24 Ω resistor and a 8.0 Ω resistor are in series across a 16 V supply. What is the pd across the 8.0 Ω resistor?
- A. 4.0 V
- B. 8.0 V
- C. 12 V
- D. 16 V
3. A kettle draws 10 A from a 230 V supply for 2.0 minutes. How much energy does it transfer?
- A. 2.3 kJ
- B. 4.6 kJ
- C. 276 kJ
- D. 2.8 kJ
4. Four identical cells of emf 1.5 V are connected in parallel. What is the emf of the combination?
- A. 0.38 V
- B. 1.5 V
- C. 3.0 V
- D. 6.0 V
5. Two lamps are connected in parallel to a supply. One lamp has half the resistance of the other. Which statement is correct?
- A. Both lamps have the same current.
- B. The lamp with the lower resistance dissipates more power.
- C. The lamp with the higher resistance dissipates more power.
- D. The lamps have different pds across them.