$($a$)$ Will the electric field strength between two parallel conducting plates exceed the breakdown strength for air $(3\mathrm{.}0$x$10^6)$ of the plates are separated by $2\mathrm{.}00$ mm and a potential difference of $5\mathrm{.}0$x$10^3$ is applied? $($b$)$ How close together can the plates be with this applied voltage?