The magnetic field at the center of a circular coil of radius $R$ due to a current $I$ flowing through it is $B$. The magnetic field at a point along the axis at a distance $R$ from the center is... - DASH

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Question

The magnetic field at the center of a circular coil of radius $R$ due to a current $I$ flowing through it is $B$. The magnetic field at a point along the axis at a distance $R$ from the center is...

$\frac{B}{\sqrt{8}}$

$\sqrt{8}B$

$\frac{B}{2}$

$\frac{B}{4}$

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