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file:///C:/Documents and Settings/mario/Desktop/hw13/e_48_1_024_s.html
Induction
The flux through the small circle is
, so that
. The magnetic field produced by the circle
on the axis is (CALCULATE !):
Thus,
where
1 ‫ מתוך‬1
. Maximum is at
(CHECK !).
31/05/2011 16:05
ftp://physweb.bgu.ac.il//PUBLIC/PhysWebSite/COURSES/PHYSICS_Exerc...
Induction
Let us consider the contour going along the surface of one cylinder closing at the edge, going
back along the surface of the other cylinder, and closing at the other edge.
The magnetic field crossing the area of this contour is
,
1 ‫ מתוך‬1
so that the flux is
.
The inductance, therefore, is
.
31/05/2011 15:56
ftp://physweb.bgu.ac.il//PUBLIC/PhysWebSite/COURSES/PHYSICS_Exerc...
Induction
Because of the symmetry
so that
so that we immediately get
1 ‫ מתוך‬1
31/05/2011 15:50
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