Figure 4.15(a) shows two circular rin 5) joined together with wires of negli- 15(b) shows the pattern obtained by fol plane of the large loop.
Figure 4.15(a) shows two circular rin 5) joined together with wires of negli- 15(b) shows the pattern obtained by fol plane of the large loop.
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
Transcribed Image Text:Illustration 4.5
Figure 4.15(a) shows two circular rings of
radii a and b (a > b) joined together with wires of negligible
resistance. Figure 4.15(b) shows the pattern obtained by folding
the small loop in the plane of the large loop.
a
(a)
(b)
(c)
Fig. 4.15
The pattern shown in Fig. 4.15(c) is obtained by twisting the
small loop of Fig. 4.15(a) through 180°.
AJl the three arrangements are placed in a uniform time
dB
= k, perpendicular to the plane of the
dt
varying magnetic field
loops. If the resistance per unit length of the wire is a then
determine the induced current in each case,
%3D
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