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SS3: PHYSICS - 2ND TERM

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  1. Magnetic Field
    10 Topics
    |
    1 Quiz
  2. Magnetic Field
    5 Topics
    |
    1 Quiz
  3. Electromagnetic Field
    4 Topics
    |
    1 Quiz
  4. Electromagnetic Induction
    7 Topics
    |
    1 Quiz
  5. The Transformer
    5 Topics
    |
    1 Quiz
  6. Simple A.C Circuit
    11 Topics
    |
    1 Quiz
  7. Models of the Atom
    2 Topics
    |
    1 Quiz
  8. Radioactivity
    3 Topics
    |
    1 Quiz
  9. Half Life
    8 Topics
    |
    1 Quiz
  10. Energy Quantization
    5 Topics
    |
    1 Quiz
  11. Photoelectric Effect
    6 Topics
    |
    1 Quiz
  12. Wave Particle Paradox
    6 Topics
    |
    1 Quiz
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Lesson 2, Topic 2
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The Working Principle of an Electric Bell and a Telephone Earpiece

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Topic Content:

  • Electric Bell
    • Working Principle
  • Telephone Earpiece

Electric Bell:

Screen Shot 2020 10 29 at 3.05.50 PM

This consists of a U-shaped magnet with a coil of wire wound in the opposite direction

Working Principle:

When the bell is pressed, current flows through the coil of electromagnets and the soft iron armature is attracted by the electromagnet and the hammer attached to the armature moves such that 

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Peculiar
Peculiar
22/06/2022 12:47 AM

Thanks for this

Kelvin
Kelvin
Reply to  Peculiar
23/06/2022 8:06 PM

Thank you to

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