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  4. An electron moving in a circular orbit of radius R, with a period T is equivalent to a magnetic dipole of dipole moment

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Q. An electron moving in a circular orbit of radius $R$, with a period $T$ is equivalent to a magnetic dipole of dipole moment

Uttarkhand PMTUttarkhand PMT 2010

Solution:

Dipole moment $=i A=\frac{e}{T} \cdot \pi R^{2}=\frac{\pi e R^{2}}{T}$