Test for polarity of a magnet

Test for polarity of a magnet

The polarity of any magnet may be tested by bringing both its poles, in turn, near to the known poles of a suspended magnet. Repulsion will indicate similar polarity. If attraction occurs, no firm conclusion can be drawn, since attraction would be obtained between either:

(a) two unlike poles or

(b) a pole and a piece of magnetized material.

Repulsionis, therefore, the only sure test for polarity.

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