Question 31 of 276
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 and from axis of the wire is :
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Answer: (B)
Magnetic Effects & Magnetism
JEE Main level, single correct, medium
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More Physics practice
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(Take ) - Magnetic Effects & MagnetismA rod with circular cross-section area and length is wound uniformly with turns of an insulated wire. If a current of flows in the wire windings, the total magnetic flux produced inside windings is . The relative permeability of the rod is
(Given : Permeability of vacuum )
JEE Main Physics practice question on Magnetic Effects & Magnetism (Magnetic Field), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.