Due to the flow of current in a circular loop of radius $R$,the magnetic induction produced at the centre of the loop is $B$. The magnetic moment of the loop is (where ${\mu _0}$ is the permeability constant).
- A$B{R^3}/2\pi {\mu _0}$
- B$2\pi B{R^3}/{\mu _0}$
- C$B{R^2}/2\pi {\mu _0}$
- D$2\pi B{R^2}/{\mu _0}$
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