Engineering, 05.11.2019 03:31 chanahvanya
An infinite straight wire with radius r carries a current i uniformly distributed over its cross section. the magnetic field at a distance d from the axis of the wire is b. what is the magnetic field a distance 2d from the axis of the wire? both points are inside (2d < r) the wire.(a) both fields are zero.(b) b(c) b/2(d) 2b(e) b/4(f) 4b
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