If the electron revolving around the nucleus in a radius 'r' with orbital speed 'v' has magnetic moment evr/2. Hence, using Bohr's postulate of the quantization of angular momentum obtain the magnetic moment (M) of hydrogen atom in its ground state and current (I) due to revolution of electron.

• A.  \[M=\frac{eh}{4\pi m},I=\frac{eV}{2\pi r}\]
• B. \[M=\frac{2eh}{5\pi m},I=\frac{eV}{4\pi r}\]
• C. \[M=\frac{h}{\pi m},I=\frac{e}{\pi r}\]
• D. \[M=\frac{eh}{\pi m},I=\frac{eV}{\pi r}\]