The greatest magnetic force is concentrated around the poles of a magnet. Repulsion is a sure method of determining whether two substances are magnets.ģ. Like poles repel and unlike poles attract. They are double poled substances with both the North and South poles.Ģ. The materials that are so lightly attracted such that the magnet seems to have no effect on them are called paramagnetic materials (mostly non-magnetic materials).įerrites are a mixture of iron oxide and barium oxide are the most newly developed magnetic materials.Ĭeramic magnets or magnadur magnets are made from ferrites and are very strong.ġ. iron, nickel, cobalt are called ferromagnetic materials. Substances that are repelled by magnets are said to be diamagnetic whereas those which are strongly attracted i.e. Iron, steel, cobalt and nickel are magnetic substances, while wood, glass and copper are examples of non-magnetic substances. Ones are those that are not affected by magnets.
Magnetic materials are those that are strongly attracted by magnets while non-magnetic Other magnets produced artificially by man are called artificia l magnets. Natural magnet which was discovered by the Chinese 2,000 years ago. Magnets are substances that are able to attract and hold items.
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