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Physics

You are given two similar bars. One is a magnet and the other is of soft iron. How will you distinguish and identify them?

Electro-Magnetism

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Answer

Let the two identical bars be bar A and bar B.

  1. Take the bar A and place it on a table.
  2. Take the bar B and touch it to one end of bar A, then at another end and then in middle. If the bar B sticks to the bar A at both the ends and also at the middle, then the bar A is made up of soft iron.
  3. Repeat the above process by placing the bar B on the table and touch the bar A on one end, then on another end and finally on middle of bar B. We will find that the bar A will be attracted towards both the ends of bar B, but not to the middle which shows that bar B is a magnet.

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