Example 10.7 A coaxial cable consists of a central conducting core wire of radius a and a coaxial cylindrical outer conductor of radius b. The two conductors carry an equal current I in opposite directions in and out of the plane of the paper. What will be the magnitude of the magnetic field B for a r b and b r ? What will be its direction? - VgyanHub

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Example 10.7 A coaxial cable consists of a central conducting core wire of radius a and a coaxial cylindrical outer conductor of radius b. The two conductors carry an equal current I in opposite directions in and out of the plane of the paper. What will be the magnitude of the magnetic field B for a r b and b r ? What will be its direction?

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