Question

A power source of 2.0 V is attached to the ends of a capacitor. The capacitance is 4.0 μF. What is the amount of charge stored in this capacitor?

Answer 1

$C = 4 \ \mu F = 4 \cdot 10^{-6} \ F. \newline q = Cu = 4 \cdot 10^{-6} \cdot 2 = 8 \cdot 10^{-6} = 0.000008 \ C.$