surface charge density of a cube where e115 meters and q14cS

surface charge density of a cube where e1=.15 meters and q1=+4c

Solution

Side length of the cube = 0.15 meter.= e1

Total surface area of the cube = 6 x (e1)² = 6 x (0.15x0.15) = 135.0 x 10^-3 m²

charge = q1 = 4 Coulomb.

charge density = Total charge/ Total area

                         = 4 / (135.0 x 10^-3 )

                         = 29.62 C/m²