bipin90 bipin90

20-10-2020
Physics

contestada

A permanent magnet cannot be used in electrical bell .Why?

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sbinsumait06 sbinsumait06

20-10-2020

Answer:

we can not use permanent magnets in radio and electric bells , because permanent magnets loose their property after some time whereas we can change the properties of electromagnet.

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83du4vgf2s 83du4vgf2s

20-10-2020

what he said, yup!! ^^^

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