If wire of length $L$ form a loop of radius $R$ and have $n$ turn. Find magnetic field at centre of loop if current flowing in loop is $I$
If wire of length $L$ form a loop of radius $R$ and have $n$ turn. Find magnetic field at centre of loop if current flowing in loop is $I$
- A
$\frac{{{\mu _0}}}{{4\pi }}\frac{I}{{{R^2}}} \times {L^2}$
- B
$\frac{{{\mu _0}}}{{4\pi }}\frac{I}{{{R^2}}} \times L \times {n^2}$
- C
$\frac{{{\mu _0}I}}{{4\pi }}\frac{{4{\pi ^2}{n^2}}}{L}$
- D
$\frac{{{\mu _0}}}{{4\pi }}I\,4{\pi ^2}{n^2} \times L$
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