A current of 1.2 A is flowing in a coaxial cable whose outer radius is five times its inner radius. What is the magnetic field energy stored in a 3.0- m length of the cable?

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A current of 1.2 A is flowing in a coaxial cable
whose outer radius is five times its inner radius.
What is the magnetic field energy stored in a 3.0-
m length of the cable?
Transcribed Image Text:A current of 1.2 A is flowing in a coaxial cable whose outer radius is five times its inner radius. What is the magnetic field energy stored in a 3.0- m length of the cable?
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