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Devices using permanent magnets and electromagnets

Galvin Pinto asked;

  1. List the devices where permanent magnets & electromagnets are used.
  2. Sketch the pattern of the field lines around a current carrying:
    • Straight Conductor

    • Loop of wire

    • Solenoid

    Ans:

    1. Permanent Magnets are used in
      • Laboratory magnets
      • loud speakers
      • microphones
      • cyclotron
      • generators
      • and many more
    2. Pattern of the field lines around a current carrying

    Straight Conductor

    image

    Loop of wire

    image

    Solenoid

    image

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