*7.25 A brass ring with triangular cross section encircles a very long straight wire concentrically as in Figure 7.35. If the wire carries a current I, show that the total number of magnetic flux lines in the ring is Molh a + b = b - a In 2πb b Calculate Y if a = 30 cm, 10 cm, h 5 cm, and I 10 A. b =

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* 7.25 A brass ring with triangular cross section encircles a very long straight wire concentrically
as in Figure 7.35. If the wire carries a current I, show that the total number of magnetic
flux lines in the ring is
Molh
Y
b a In
a + b
b
2πb
Calculate Y if a
-
30 cm, b = 10 cm, h = 5 cm, and I = 10 A.
=
Transcribed Image Text:* 7.25 A brass ring with triangular cross section encircles a very long straight wire concentrically as in Figure 7.35. If the wire carries a current I, show that the total number of magnetic flux lines in the ring is Molh Y b a In a + b b 2πb Calculate Y if a - 30 cm, b = 10 cm, h = 5 cm, and I = 10 A. =
I
h
Brass ring
b
a
Figure 7.35 Cross section of a brass ring enclosing a long
straight wire; for Problem 7.25.
Transcribed Image Text:I h Brass ring b a Figure 7.35 Cross section of a brass ring enclosing a long straight wire; for Problem 7.25.
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