Complete Question
The complete question is shown on the first uploaded image
Answer:
The correct answer is option 9
Explanation:
The objective of this question i to obtain the magnitude of the electric field
We are told from the question that
The area is A
The magnitude of the total charge is Q
Generally the surface charge density is mathematically represented as
[tex]\sigma = \frac{Q}{A}[/tex]
Now the electric field for a uniform conducting plate is mathematically represented as
[tex]E = \frac{|\sigma| }{2\epsilon_o}[/tex]
Now substituting the formula above for [tex]\sigma[/tex]
[tex]E = \frac{Q}{2\epsilon_o A}[/tex]