A coaxial cable consists of a solid inner conductor of radius a =0.2 m carrying total current of 5A, surrounded by a concentric cylindrical tube of inner radius b=0.4 m and outer radius c=0.6m carrying current of 5A. The conductors carry equal and opposite currents I distributed uniformly across their cross-sections. Determine the magnetic field at a distance r=0.5m from the axis.

Nonuniform displacement current. The figure shows a circular region of radius R = 3.5 cm in which a displacement current is directed out of the page. The magnitude of the displacement current is J, = (2 A)(r/R), where r is the radial distance (r < R) from the center. What is the magnitude of the magnetic field due to Ja at radial distances (a) r= 1.5 cm and (b) r%3D 4.0 cт? R 11.42 (а) В - 100 (b) В %-

A long straight conducting rod carries a current I with a non-uniform current density J = ar2, and has a radius R. The value of the constant is 32.0 A/mm4 and the radius of the rod is 4.80 mm. Determine the magnitude of the magnetic field at the following points. (b) r2 = 2R

An infinitely long wire carries a current of I = 160 A. Consider a circle with a radius r and centered on the wire. Determine the magnitude of the magnetic field B at points along the circle in terms of I and r.

The current density inside a long, solid, cylindrical wire of radius a = 2.4 mm is in the direction of the central axis and its magnitude varies linearly with radial distance r from the axis according to J = Jor/a, where J = 430 A/m2. Find the magnitude of the magnetic field at a distance (a) r=0, (b) r = 1.7 mm and (c) r=2.4 mm from the center. The tolerance is + 3%. (a) Units (b) Number i Units (c) Number i Units