A current I flows in the anticlockwise direction through a square loop of side a lying in the XOY plane with its center at the origin. The magnetic induction at the center of the square loop is

\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi {{a}^{2}}}{{\hat{e}}_{z}}\]

\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi a}{{\hat{e}}_{x}}\]

\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi a}{{\hat{e}}_{z}}\]

\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi {{a}^{2}}}{{\hat{e}}_{x}}\]

A current I flows in the anticlockwise direction through a square loop

1.	A current I flows in the anticlockwise direction through a square loop of side a lying in the XOY plane with its center at the origin. The magnetic induction at the center of the square loop is
A.	\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi a}{{\hat{e}}_{x}}\]
B.	\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi a}{{\hat{e}}_{z}}\]
C.	\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi {{a}^{2}}}{{\hat{e}}_{z}}\]
D.	\[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi {{a}^{2}}}{{\hat{e}}_{x}}\]
Answer» C. \[\frac{2\sqrt{2}{{\mu }_{0}}I}{\pi {{a}^{2}}}{{\hat{e}}_{z}}\]