The angular momentum of an electron in a given orbit is J. Its kinetic

1.	The angular momentum of an electron in a given orbit is J. Its kinetic energy will be:
A.	\[\frac{1}{2}\,\frac{{{J}^{2}}}{m{{r}^{2}}}\]
B.	\[\frac{Jv}{r}\]
C.	\[\frac{{{J}^{2}}}{2m}\]
D.	\[\frac{{{J}^{2}}}{2\,\pi }\]
Answer» B. \[\frac{Jv}{r}\]

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The angular momentum of an electron in a given orbit is J. Its kinetic energy will be:

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