Question

The material which used to make permanent
magnet has
(1) High retentivity, low coercivity
(2) Low retentivity, low coercivity
(3) Low retentivity, high coercivity
(4) High retentivity, high coercivity



please explain the reason in detail​

Answer 1

Answer:

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Steel isn't the only material used to make permanent magnets. Permanent magnets are also made of ceramic, iron, cobalt, nickel, gadolinium and neodymium. With that said, steel is a relatively inexpensive and widely available material, even more

Explanation:

Permanent magnets are made from special alloys (ferromagnetic materials) such as iron, nickel and cobalt, several alloys of rare-earth metals and minerals such as lodestone.

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