We consider a coil constituted of a conducting wire on a circular torus (see Figure below). The section is square (length a) and the radius is R. The total number of turns is n and the current circulating is I. What is the expression of the magnetic field flux ? R a 0 0 0 0 0 Honla R+a In R-a Honla 4= 4=0 4= 4= Honla 2 Honla 2R+a In 2π 2R-a O X

We consider a coil constituted of a conducting wire on a circular torus (see Figure below). The section is square (length a) and the radius is R. The total number of turns is n and the current circulating is I. What is the expression of the magnetic field flux ? R a 0 0 0 0 0 Honla R+a In R-a Honla 4= 4=0 4= 4= Honla 2 Honla 2R+a In 2π 2R-a O X

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A square magnetic core has a mean length of 43 cm and a cross-sectional area of120cm2. A coil of 200 turns of wire is wound around one of the columns of the core, thewhich is made of a material whose required magnetic field strength is H=115 Aturns/m. a) How much current is required to produce a flux of 0.012 Wb, in the core?b) What is the relative permeability of the core for that current?c) What is the reluctance?
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Below is the magnetic circuit with two windings and two air gaps. The cross-sectional area is constant in the parts of the air gaps and within the whole core and is shown with Ac. g1 = 1 mm, g2 = 0.5 mm, Ac = 200 mm2, i1 = 5 A, i2 = 3 A, N1 = 100, N2 = 50. Also, the magnetic permeability of the core can be accepted as μr = ∞. According to this information, a) Magnetic flux density in the air gaps,a) Self inductance of the windings, b) Calculate the mutual inductances between the windings.
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