Questions
A long straight wire of radius carries a steady current The current is uniformly distributed over its cross-section. The ratio of the magnetic fields and , at radial distances and respectively, from the axis of the wire is
detailed solution
Correct option is A
Similar Questions
Four long insulated current carrying wires, cross each other as shown in the figure. If the separation between any pair of parallel wires is d, the magnetic induction at O is
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