A current loop consists of two identical semicircular parts each of radius R, one lying in the x-y plane and the other in x-z plane. If the current in the loop is $i$. The resultant magnetic field due to the two semicircular parts at their common centre is

Question

${{{\mu _0}i} \over {2\sqrt 2 R}}$

${{{\mu _0}i} \over {2R}}$

${{{\mu _0}i} \over {4R}}$

${{{\mu _0}i} \over {\sqrt 2 R}}$

Solution

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