Questions
A coaxial cable consists of a thin inner conductor fixed along the axis of a hollow outer conductor. The two conductors carry equal currents in opposite directions. Let and be the magnetic fields in the region between the conductors and outside the conductor, respectively. Then,
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Correct option is C
Apply Ampere's Circuital Law for loop L1 and L2.Similar Questions
A long straight wire of radius a carries a steady current i. The current is uniformly distributed across its cross section. The ratio of the magnetic field at a /2and 2a is
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