A 10nC point charge is at the center of a 2mx2mx2m. What is the electric flux through the top surface of the cube?
int(EA) = (Qin)/(ε0)
The Attempt at a Solution
int(EA) = EA + EA + EA + EA + EA + EA = 6EA
A = 4m^2
Qin = 10nC
ε0 = 8.99x10^-12
6EA = (10x10^-9)/(8.99x10^-12)
E = (10x10^-9)/((8.99x10^-12)(6)(A))
E = (10x10^-9)/((8.99x10^-12)(6)(4))
E = 3745
Then for just the top surface
Etop = 3745/6 = 624
Where did I go wrong this time? XD Thanks in advance!