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Hi. In this task we're asked to calculate the magnetic field inside the small cylinder (0>r>r1). The answer is zero, which I don't quite understand...Here is the picture:
http://bildr.no/image/WTJ1VG5F.jpeg
As the picture shows there's a current I going through the inner cylinder. Wouldn't this current generate a magnetic field at a distance 0 >r>r1?
http://bildr.no/image/WTJ1VG5F.jpeg
As the picture shows there's a current I going through the inner cylinder. Wouldn't this current generate a magnetic field at a distance 0 >r>r1?