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Question

Why is soft Iron core used in Galvanometer?


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Solution

Galvanometer:

  1. A device that is used to detect a small current in a circuit is Galvanometer.
  2. It could even measure current even in order of microamperes.
  3. It uses a a magnetic needle to detect the small currents.

Uses of soft Iron core in a galvanometer.

  1. A soft iron core that is used here is ferromagnetic in nature.
  2. It can attract or give strength to magnetic lines of force.
  3. It could retain the magnetism even when the current us switched off.
  4. It basically increases the sensitivity of the galvanometer.

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