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Magnetics question

2011 · Shift 0 · Q61

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JEE Main
Physics
Magnetics
2011 · Shift 0 · Q61

Magnetics question

2011 · Shift 0 · Q61

JEE MainPhysicsMagneticsMCQ+4 / −1

A current

I

flows in an infinitely long wire with cross section in the form of a semi-circular ring of radius

R.

The magnitude of the magnetic induction along its axis is:

A
${{{\mu _0}I} \over {2{\pi ^2}R}}$
B
${{{\mu _0}I} \over {2\pi R}}$
C
${{{\mu _0}I} \over {4\pi R}}$
D
${{{\mu _0}I} \over {{\pi ^2}R}}$

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