An infinitely long uniform solid wire of radius
a carries a uniform dc current of density j? .
A hole of radius b(b<a) is now drilled along the length of the wire at a distance d from the center of the wire as shown below.
The magnetic field inside the hole is
|(A) uniform and depends only on d||(B) uniform and depends only on b|
|(C) uniform and depends on both b and d||(D) non uniform|
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