Q. In hydrogen atom, the electron makes $6.6 \times 10^{15}$ revolutions per second around the nucleus in an orbit of radius $0.5 \times 10^{- 10}m.$ It is equivalent to a current nearly
A) $1\ A$
B) $1\ mA$
C) $1\ \mu A$
D) $1.6 \times 10^{- 19}A$
Explanation
(b) $i = qv = 1.6 \times 10^{- 19} \times 6.6 \times 10^{15} = 10.56 \times 10^{- 4}A = 1mA$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.