Consider a coaxial cable as shown in the figure. The cable consists of a solid inner conductor of radius ri = 0.2 cm that is surrounded by a cylindrical tube of inner radius r20.8 cm and outerradius r3 = 1.7 cm. The conductors carry equal and opposite currents I = 1 A but the current density varies linearly with the distance from the center for the inner conductor (j1 = C1r) while itis distributed uniformly for the outer conductor. Determine the magnetic field (in units of µT (microtesla)) at a distance r = 1.5 cm from the axis.(Ho = 4n x 10 7N/A² and a = 3.14)Answer:

Given, r1= 0.2 cm= 0.2×10-2mr2= 0.8 cm= 0.8×10-2 mr3= 1.7 cm= 1.7×10-2mI= 1Aj1=c1rr= 1.5 cm=…

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