a$)$ Determine the capacitance of a Teflon$-$filled parallel$-$plate capacitor having a plate area of $1\mathrm{.}95$ cm$2$ and a plate separation of $0\mathrm{.}0600$ mm$.$

$60\mathrm{.}4$ pF

$($b$)$ Determine the maximum potential difference that can be applied to a Teflon$-$filled parallel$-$plate capacitor having a plate area of $1\mathrm{.}95$ cm$2$ and a plate separation of $0\mathrm{.}0600$ mm$.$