Q. Two points $P$ and $Q$ are maintained at the potential of $10\ V$ and $- 4V$, respectively. The work done in moving 100 electrons from $P$ to $Q$ is
A) $- 9.60 \times 10^{- 17}\ J$
B) $9.60 \times 10^{- 17}\ J$
C) $- 2.24 \times 10^{- 16}\ J$
D) $2.24 \times 10^{- 16}\ J$
Explanation
(d) $W = 100e( - 4 - 10) = - 1400eV$
$= - 1400\left( - 1.6 \times 10^{- 19} \right)J = 2.24 \times 10^{- 16}\ J$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.