Q. The electron in a hydrogen atom circles around the proton in $1.5941 \times 10^{- 18}$s. The equivalent current due to motion of the electrons is

A) 127.37 mA
B) 122.49 mA
C) 100.37 mA
D) 94.037 mA
Explanation

(c) The equivalent current due to motion of electrons is given by
$I = \frac{e}{t} = \frac{1.6 \times 10^{- 19}}{1.594 \times 10^{- 18}}$
$= 1.0037 \times 10^{- 1}$
$= 100.37 \times 10^{- 3}A$
$= 100.37mA$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.