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A magnetic circuit consists of a toroidal silicon sheet steel with relative permeability ?? of 150, and a small air gap.A current ? flows through 200 turns of wire wrapped around the toroid. The magnetic flux of the circuit is 5 × 10−9 ??. The total length of the circuit is 0.8 m, and the cross-sectional area of the toroid is10−4?2

A magnetic circuit consists of a toroidal silicon sheet steel with relative permeability ?? of 150, and a small air gap.A current ? flows through 200 turns of wire wrapped around the toroid. The magnetic flux of the circuit is 5 × 10−9 ??. The total length of the circuit is 0.8 m, and the cross-sectional area of the toroid is10−4?2

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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3. A magnetic circuit consists of a toroidal silicon sheet steel with relative permeability ?? of
150, and a small air gap.A current ? flows through 200 turns of wire wrapped around the toroid.
The magnetic flux of the circuit is 5 × 10−9 ??. The total length of the circuit is 0.8 m, and the
cross-sectional area of the toroid is10−4?2
. The length of the air gap is 0.07 m. Find
i. the total reluctance and inductance of the circuit
ii. magnetomotive force and hence the current.
?0 = 4? × 10−7
?/M

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