Respuesta :
Answer:
Explanation:
Given
side of square shape [tex]a=5\ cm[/tex]
Electric flux [tex]\phi =3\times 10^{-5}\ N.m^2/C[/tex]
Permittivity of free space [tex]\epsilon_0=8.85\times 10^{-12} \frac{C^2}{N.m^2}[/tex]
Flux is given by
[tex]\phi =EA\cos \theta [/tex]
where E=electric field strength
A=area
[tex]\theta [/tex]=Angle between Electric field and area vector
[tex]E=\frac{\phi }{A\cos (0)}[/tex]
[tex]E=\frac{3\times 10^{-5}}{25\times 10^{-4}\times \cos(0)}[/tex]
[tex]E=0.012\ N/C[/tex]
and Electric field by a uniformly charged sheet is given by
[tex]E=\frac{\sigma }{2\epsilon_0}[/tex]
where [tex]\sigma[/tex]=charge density
[tex]=\frac{\sigma }{\epsilon_0}[/tex]
[tex]\sigma =0.012\times 8.85\times 10^{-12}[/tex]
[tex]\sigma =2.12\times 10^{-13}\ C/m^2[/tex]
