A uniformly charged conducting plate with area A has a total charge Q which is positive. Consider a cross-sectional view of the plane and the electric field lines due to the charge on the plane. E E +Q + + + + + + + + + + + P Find the magnitude of the field at point P, which is a distance a from the plate. Assume that a is very small when compared to the dimensions of the plate, such that edge effects

Complete Question

The complete question is shown on the first uploaded image

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

Now the electric field for a uniform conducting plate is mathematically represented as

Now substituting the formula above for

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.