Answer:
[tex]6.29591\times 10^{-6}\ N/C^2[/tex]
Explanation:
Flux is given by
[tex]\phi=EAcos\theta[/tex]
A = Area
[tex]A=0.4\times 10^{-3}\times 0.6\times 10^{-3}[/tex]
E = Electric field = 76.7 N/C
Angle is given by
[tex]\theta=90-20\\\Rightarrow \theta=70^{\circ}[/tex]
[tex]\phi=76.7\times 0.4\times 10^{-3}\times 0.6\times 10^{-3}\times cos70\\\Rightarrow \phi=6.29591\times 10^{-6}\ N/C^2[/tex]
The flux through the sheet is [tex]6.29591\times 10^{-6}\ N/C^2[/tex]
