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A toroidal electromagnet has 1000 turns ...

A toroidal electromagnet has `1000` turns and mean radius of `0*1m`. The magnetic core has a relative permeability of `2000`. If a current of `1A` is placed. Calculate the magnetic induction.

Text Solution

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Number of turns/length
`=n=(1000)/(2pir), r=0*1m`
`mu_r=2000, I=1A, B=?`
`B=muH=(mu_0mu_r)nI`
`=4pixx10^-7xx2000xx(1000)/(2pir)xx1`
`B=(0*8pi)/(2pixx0*1)=4tesla`
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