Question

Asked Oct 22, 2019

Step 1

(a) Let the radius of amperian loop be *r*. For *r* < *a*, the magnetic field is zero. Outside the loop, the magnetic field is given by,

Step 2

(b) Current density *J* is proportional to *r*. Therefore, the current is,

Step 3

For *r* < *a*, the curre...

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