Question

A capacitor of 16 micro-farads is connected to a 23 volt battery. The distance between the plates of the capacitor is reduced by a factor of 3.5 while the capacitor is still connected to the battery. What is the capacitance of the capacitor after the distance between the plates is changed, in micro-farads?

Answer 1

The capacitance is inversely proportional to distance between the plates

$C_f = = 3.5C_i = 3.5 \times16 \times 10^{-6} = 56 \times 10^{-6}F$