EARTH SCIENCE
MAGNETISM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Hit metal really hard with a hammer
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Throw metal in a fire
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Make an electromagnetic using an iron core, wire, and a battery
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cut a magnet in half
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Detailed explanation-1: -When a bar magnet is cut into half both the halves will have a north pole and a south pole each. Magnets cannot have isolated poles. A new north pole and south pole will be formed at the edges where the bar magnet is cut as shown in the figure.
Detailed explanation-2: -By exposing Ferro-magnetic metals such as nickel and iron to magnetic fields it is possible to make magnets. Using electric current. SINGLE TOUCH METHOD: In This method, all we need is a permanent magnet and a ferromagnetic material.
Detailed explanation-3: -You might think that you would end up with one north-pole piece and one south-pole piece. But that’s not what happens. When you cut a magnet in half, you end up with two magnets. Each piece has its own north pole and south pole, as shown in Figure 7.