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A faulty coaxial cable. A very long cable made of a solid inner cylinder and a coaxial, cylindrical, outer shell with finite thickness. The inner cylinder carries a current I while the outer shell carries a current 2? in the opposite direction (see figure). What is the magnitude of the magnetic field at ? < ? < ?? Refer to the question on the image, kindly provide complete solutions.
Transcribed Image Text:A very long cable made of a solid
O 31
inner cylinder and a coaxial, cylindrical, outer shell with
finite thickness. The immer cylinder caries a current I while
the outer shell caries a current 21 in the opposite direction
(see figure). What is the magnitude of the magnetic field at
b <r< c?
61
431
а.
- 2+4
2nr
b.
2nr
2 -
K37
C.
- 1 + 2-
2nr
H31
d.
1
2nr
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