H in Parallel Universe

Score: 1 Point

An $e^{-}$ is revolving in the $1^{st}$ orbit of $H$ atom with a velocity of $200 ms^{-1}$. The current due to the revolution of $e^{-}$ can be expressed as $a×10^b$, where $a$ is not an integer. Find the value of $|b|$. 



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