Doc Brown's GCSE OCR Gateway Science-Physics Revision Notes

PLEASE NOTE NEW revision summaries for the NEW OCR Gateway Science A GCSE Physics and NEW OCR GCSE Gateway Combined Science A Physics courses: Revision for Paper 1 (Topics 1-4) and  Paper 2 (Topics 5-8) STARTING with Y10 in Sept. 2016 onwards, first exams in 2018

OCR GCSE Gateway Science Physics Module P6 Electricity For Gadgets

Unit-Items P6f Generating

  1. Electricity is a very convenient energy source which allows us to use the everyday appliances at home, school and work.

  2. As well as being convenient it is readily available, easy to use, versatile and clean at the point of use.

  3. This unit develops ideas about how electricity is generated.

  4. Suggested practical and research activities you might have done to revise from

    • Demonstrating the induction effect using a strong magnet and a wire.

    • Using a coil and a strong magnet, show the effect of increasing the number of turns and changing the relative motion of the magnet and coil.

    • Building a model generator.

    • Examining and researching the differences between a model generator and a generator in a power station.

    • Examining ways in which the electrical output from a generator can be increased.

    • Comparing the voltage output of AC and DC generators using a cathode-ray oscilloscope (CRO) and investigate how rotation speed affects the output.

  5. Be able to describe and recognise the dynamo effect:

    • electricity can be generated by:

      • moving a wire near a magnet

      • moving a magnet near a wire.

  6. Be able to label a diagram of an AC generator to show the coil, magnets, slip rings and brushes.

  7. Be able to describe a generator as a motor working in reverse.

  8. Be able to explain why electricity is useful:

    • enables energy to be easily transmitted over long distances

    • enables energy to be stored for future use.

  9. Know that in the UK, mains electricity is supplied at 50 Hz.

  10. Understand that a voltage is induced across a wire when the wire moves relative to a magnetic field.

  11. Understand that a voltage is induced across a coil when the magnetic field within it changes.

  12. Be able to describe the effect of reversing the direction of the changing magnetic field.

  13. HT only: Be able to explain how the size of the induced voltage depends on the rate at which the magnetic field changes.

  14. Be able to explain why the rotation of a magnet inside a coil of wire induces an alternating current.

  15. Know that electricity is generated in a power station when an electromagnet rotates inside coils of wire.

  16. Be able to describe how changing the speed of rotation of the electromagnetís coil(s) affects the size and frequency of the voltage generated.

  17. Be able to describe how changing the number of turns on the electromagnetís coil(s) affects the size of the voltage generated.

  18. HT only: When provided with a diagram, explain how an AC generator works including the action of the slip rings and brushes.

 

 

 

  • OCR GCSE Gateway Science PHYSICS

  • Module P6 Electricity For Gadgets
  • When revising, these pages provide you with a summary of what you need to know and be able to do.

  • BUT remember, your primary source of revision are your class notes, investigations and OCR GCSE Gateway science textbooks and classwork worksheets as well as examination practice with past papers.


  • PLEASE NOTE My NEW GCSE (9-1) PHYSICS REVISION SUMMARIES for Y10 2016-2017 onwards

    AQA GCSE Physics 8463 1st Paper (Topics 1-4, Combined Science Trilogy Physics 1 Topics 18-21)

    AQA GCSE Physics 8463 2nd Paper (Topics 5-8, Combined Science Trilogy Physics 2 Topics 22-24)

    Edexcel GCSE (9-1) Physics  1st Paper (Topics 1-7 & Combined Science Chemistry 2 Topics 1-8)

    Edexcel GCSE (9-1) Physics 2nd Paper (Topics 1, 8-15 & Combined Science Chemistry 2 Topics 1, 8-10, 12-15)

    OCR (9-1) Gateway Science GCSE Physics A 1st Paper (Topics P1-4 & Combined Science A physics 1 Topics P1-4)

    OCR (9-1) Gateway Science GCSE Physics A 2nd Paper (Topics P5-8 & Combined Science A physics 1 Topics P5-8)

    OCR (9-1) 21st Century Science GCSE Physics B Chapters P1-3 (Chapters P1-3, GCSE Combined Science B physics)

    OCR (9-1) 21st Century Science GCSE Physics B Chapters P4-6 (Chapters P4-6, GCSE Combined Science B physics)

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