Q$3.(20$ pt$)$ Find the smallest particulate size collected with $50\%$ efficiency in an ESP with a

collection plate area of $10m^2,$ a gas flow rate of $0\mathrm{.}5\frac{m^3}{s},$ collecting and charging field strengths

of $40,000\frac{V}{m},$ and a dielectric constant of $7\mathrm{.}2.$