In Fig. 29-47, part of a long insulated wire carrying current i = 8.50 mA is ben
ID: 2022698 • Letter: I
Question
In Fig. 29-47, part of a long insulated wire carrying current i = 8.50 mA is bent into a circular section of radius R = 1.54 cm. What are (a) the x-component, (b) the y-component, and (c) the z-component of the magnetic field (in T) at the center of curvature C if the circular section lies in the plane of the page as shown? What are (d) the x-component, (e) the y-component, and (f) the z-component of the magnetic field (in T) at the center of curvature C if the circular section is perpendicular to the plane of the page after being rotated 90° counterclockwise as indicated?
Explanation / Answer
assume +z is out of the page
a):Bx= 0T
b):By= 0T
c): Bz=Bstraight section+Bcircular section=i/2r + i/2r= 4.584x10-7 T
d):Bx=Bcirc=i/2r= 3.477x10-7 T
e): By=0T
f): Bz=Bstraight=i/2r= 1.107x10-7 T