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Which metal and which power supply are used to make a permanent magnet,​
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Which metal and which power supply are used to make a permanent magnet,​

User Marimuthu Madasamy
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Mostly iron is used to make a permanent magnet but also nickel cobalt and some alloys of a rare earth metals. The power supply used to make a permanent magnet is 6 V a.c.
User Peter Little
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