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SS1: PHYSICS – 3RD TERM

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  1. Production of Electric Current | Week 1
    6 Topics
    |
    1 Quiz
  2. Electric Current | Week 2
    5 Topics
    |
    1 Quiz
  3. Electrical Resistance of a Conductor | Week 3
    5 Topics
    |
    1 Quiz
  4. Particulate Nature of Matter | Week 4
    5 Topics
    |
    1 Quiz
  5. Crystalline and Non-crystalline Substances | Week 5
    3 Topics
    |
    1 Quiz
  6. Elastic Properties of Solids | Week 6 & 7
    4 Topics
    |
    1 Quiz
  7. Fluids at Rest & in Motion | Week 8 & 9
    6 Topics
    |
    1 Quiz
  8. Solar Collector
    3 Topics
    |
    1 Quiz



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Lesson 1, Topic 4
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Energy used in Generating Electricity – Mechanical Energy

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A simple electric motor can be used to generate electric current. It is a coil of insulated wire which rotates in the magnetic field between two powerful magnets.

As the coil rotates, it cuts across the magnetic field or lines of force of the magnets, and an electric current is induced in the circuit which is collected by a split ring commutator and carbon brushes.

The device is called a generator or dynamo.

Simple-dynamo
Simple dynamo.

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