Question

A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface if the collection consists of (a) a single +1.80 × 10-6 C charge, (b) a single -8.20 × 10-6 C charge, and (c) both of the charges in (a) and (b

Answer 1

flux= EA= QA/permitivity free space*area
the area cancel out we left with flux=charge/permitivity
so try to solve it by replacing the charges wit Q given
permitivity= 8.85 *10^-12