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SS3: PHYSICS - 2ND TERM

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  1. Magnetic Field | Week 1
    4 Topics
  2. Electromagnetic Field
    4 Topics
  3. Electromagnetic Induction
    6 Topics
  4. The Transformer
    5 Topics
  5. Simple A.C Circuit
    4 Topics
  6. Models of the Atom
    2 Topics
  7. Radioactivity
    3 Topics
  8. Half Life
    8 Topics
  9. Energy Quantization
    3 Topics
  10. Photoelectric Effect
    4 Topics
  11. Wave Particle Paradox
    3 Topics

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SS3: PHYSICS – 2ND TERM Electromagnetic Field Cause of Inefficiency in Electric Motors
Lesson 2, Topic 3
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Cause of Inefficiency in Electric Motors

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  1. Workdone against friction in the bearing and commutator
  2. Eddy current formed in the soft iron cylinder, it can be reduced by laminating the cylinder 
  3. Heat losses (I2R) in the windings 

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