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OCR Gateway GCSE Physics A topic P3 Electricity overview quiz quiz

10questions. Pick an answer and you'll see why right away.

  1. When a polythene rod is rubbed with a cloth and becomes negatively charged, what has happened?

  2. What is true of the current in a series circuit?

  3. Why are household devices wired in parallel?

  4. How is electric charge calculated?

  5. What is potential difference?

  6. For a fixed resistor at constant temperature, what does the current do when the potential difference is doubled?

  7. What is the shape of the I-V graph for a fixed resistor at constant temperature?

  8. How does the resistance of a thermistor change as it gets hotter?

  9. Which equation gives electrical power from voltage and current?

  10. An electric fire is rated at 2 kilowatts and runs for 3 hours. How much energy does it use?