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Magnetic Effects of Current and Magnetism Part 3

Section: Physics

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Question : 12

Total: 21

Consider a long straight wire of a circular crosssection (radius a) carrying a steady current l. The current is uniformly distributed across this crosssection. The distances from the centre of the wire's cross-section at which the magnetic field [inside the wire, outside the wire] is half of the maximum possible magnetic field, anywhere due to the wire, will be

[29 Jan 2025 Shift 1]

[a∕2,2a]
[a∕2,3a]
[a∕4,2a]
[a∕4,3a∕2]

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