Additional Physics Topic 4 - Current Electricity

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  • Created by: Sophie
  • Created on: 30-04-15 21:50

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

  • It's an ohmic conductor
  • It uses less current
  • It has a lower potential difference
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Other questions in this quiz

2. What is static caused by?

  • Potential difference
  • A build up of friction
  • Neutrons
  • Electrical current

3. In a parallel circuit, the current...

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

4. 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

5. Why does the current in a diode only flow in one direction?

  • The diode has a very high current in the opposite direction
  • The diode has very high resistance in the other direction
  • The diode has very high potential difference in the other direction

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