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6. Why is an LED better than some other forms of lighting?

  • It uses less current
  • It has a lower potential difference
  • It's an ohmic conductor

7. In a series circuit, the potential difference...

  • Is shared between components
  • Is the same everywhere
  • Is shared between branches

8. In a parallel circuit, the potential difference...

  • Is shared between components
  • Is the same across all components
  • Is shared between branches

9. In a series circuit, the current...

  • Adds up
  • Is the same everywhere
  • Is shared between branches

10. What does Ohm's law state?

  • For a resistor at constant temperature, there is no relationship between current and potential difference
  • For a resistor at constant temperature, current is directly proportional to potential difference
  • For a resistor at constant temperature, current is inversely proportional to potential difference