Questions
lf a long hollow copper pipe carries a direct current, the magnetic field associated with the current will be
detailed solution
Correct option is B
According to Ampere's law∮B→. dl→ = μ0Ionly for outside point, path of line integration will enclose the current . Hence, B = 0 inside.Talk to our academic expert!
Similar Questions
A coaxial cable consists of a thin inner conductor fixed along the axis of a hollow outer conductor. The two conductors carry equal currents in opposite directions. Let B1 and B2 be the magnetic fields in the region between the conductors, and outside the conductor, respectively. Then
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