magnet and magnetic material set 2
Dec 12, 2020
It is difficult to get a factory to provide magnet which is not magnetised. These unmagnetised magnet may have weak residual magnetic force or they may not be sensitive towards a weak magnet.
To solve this problem, i used a stronger magnet mounted with wheels as a tester. This tester will be placed near the poles of each metal bar to verify which is the magnet and which is the magnetic material.
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