Question $9$

A circular loop of wire $0\mathrm{.}5$ cm in radius carries a current of $30$ A $.$ The magnetic field at the center of the loop is

$38$ mT

$48T$

$1\mathrm{.}9$ mT

$2\mathrm{.}4$ mT

$0\mathrm{.}95$ mT

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