Match the column-I with column-II.
Columns | Column-II | ||
(A) | Magnets | (I) | Occurs when a magnet is heated. |
(B) | Horse shoe magnet | (II) | Should be kept in pairs with their opposite poles on the same side. |
(C) | Bar magnet | (III) | It is U-shaped. |
(D) | Demagnetisation | (IV) | Must always be kept away from mobiles, T.V., Music system, computers, etc. |
Text Solution
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Mobiles, T.V., music system, computers and many more electronic devices are made up of magnetic materials and magnet in it. When we bring external magnets near these electronic devices, magnets will interfere with magnetic component of devices so magnets must always be kept away from electronic devices.
Horse shoe magnet is a bar magnet of U-shaped.
Bar magnet should be kept in pairs with their opposite pole on the same side separated by a non-magnetic material (wood).
Magnet loses its magnetic power called demagnetisation. It is due to heating, hammering, A.C. Current field etc.
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