The retentivity (a property) of material is useful for the construction of

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The retentivity (a property) of material is useful for the construction of permanent magnets.

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The materials having low retentivity are suitable for making (a) weak magnets (b) temporary magnets (c) permanent magnets (d) none of the above

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Description : What is retentivity?

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The energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis lossThe energy required to magnetize and demagnetize is called a) Saturation b) Retentivity c) Coercivity d) Hysteresis loss

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Ferromagnets

Description : Ferromagnets

Last Answer : Ferromagnets Only certain materials, such as iron, cobalt, nickel, and gadolinium, exhibit strong magnetic effects. Such materials are called ferromagnetic, after the Latin word for iron, ... licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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Core of an electromagnet should have

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Last Answer : Magnetism of a magnet can be destroyed by heating, hammering, by inductive action of another magnet.

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How does the magnetic compass needle behave in a magnetic field ?

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A keeper is used to

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A permanent magnet

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