Question

An iron bar is magnetised by a single touch method by moving a permanent magnet with its north pole on the bar. What polarity will be developed at the end at which the bar magnet is lifted?
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Answer 1

Explanation:

Explanation:Single touch method is a simple and continent method to make a small magnet that does not have very long field of attraction. Here an iron bar is rubbed with a magnet repeatedly. The iron bar will get the same poles at cast as the bar magn