Question

Moving a charge from point A, where the potential is 473.44 V, to point B, where the potential is 143.75 V, takes 0.34 milliJ of work. What is the value of the charge, in micro-Coulombs?

Answer 1

$\begin{gathered} W=\Delta V\cdot q \\ 0.34\cdot10^{-3}=(474.44-143.75)q \\ q=1.028\cdot10^{-6}C \end{gathered}$