Question

If a toroid uses bismuth for its core be greater or slightly less then when the core is empty

Answer 1

If a toroid uses bismuth for its core, will the field in the core be (slightly) greater or (slightly) less than when the core is empty?

${\bf{\underline{Answer:}}}$

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A toroid using bismuth core has a magnetic field slightly greater than a toroid whose core is empty because bismuth is a diamagnetic substance.

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