Q. Kinetic energy of an electron accelerated in a potential difference of $100\ V$ is
A) $1.6 \times 10^{- 17}\ J$
B) $1.6 \times 10^{21}\ J$
C) $1.6 \times 10^{- 29}\ J$
D) $1.6 \times 10^{- 34}\ J$
Explanation
(a) By using $KE = QV \Rightarrow KE = 1.6 \times 10^{- 19} \times 100$
$= 1.6 \times 10^{- 17}\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.