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  • A circular loop carrying a current 5 A, produces a magnetic field of  mT, at its centre. Find the value of the magnetic moment of the loop.   <div style="

A circular loop carrying a current 5 A, produces a magnetic field of \pi mT, at its centre. Find the value of the magnetic moment of the loop.

 

 
 
 
 
 

Answers (1)

\\B=\frac{\mu_0i}{2r}\\\pi\times10^{-3}=\frac{4\pi\times10^{-7}\times5}{2r}\\\\r=10^{-3}m

M=i\pi r^2=5\times\pi\times10^{-6}=15.707\times10^{-6}Am^2

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