Question

3. (40) In Fig.1, (a) 0 r< a, find B, VxB, and magnetic energy per unit length. (b) a<r< b, find B, VxB, and magnetic energy per unit length. (c) b<r, findB, VxB, and magnetic energy per unit length. (d) Find the inductance per unit length. (3+3+4)x3+ 10) 4. (20) Fig. 2 shows a side view of a cylindrical bar magnet. (a) Find H di for a dashed contour and explain. (b) Describe the direction of H inside of the magnet using the answer of (a). (c) Explain why the magnet is a nonlinear material. (d) Find H di for a dashed contour when a coil of N turns is wound on the magnet and explain. 5. (a) (6) Find B at a point located at a distance r from a very long straight wire carrying current I as shown in Fig. 3. (b) (6) Find magnetic flux passing through the rectangular loop due to the current I (flux linkage). (c) (8) Determine the mutual inductance between a conducting rectangular loop and a very long straight wire. a I I Fig.1 Fig. 2 Fig. 3

problem-3 plz

Answer 1

a X 2 2 e I Ta2 er unit Asalume mnee mr L 4A a '4A a

a X B 2. 2. 2. 2. 8A h>b O X aductanes Lengih

Please rate it up thanks :)