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Toroid

The current i...

Question

The current in the winding on a toroid is $2.0 A$ . There are $400$ turns and the mean circumferential length is $40 c m$ . If the inside magnetic field is $1.0 T$ , the relative permeability is near to:

A

100

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B

200

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C

300

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D

400

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Solution

The correct option is D $400$

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