Potential Difference at Center of Square with q = 0.1uC

[Avitoholis]

Magnitude and direction of E

Ok, hear is the question I need to answer, "What is "E" in direction and magnitude at the centre of a square if q=0.1uC." Now my question is about the diagram that is provided I don't know what the values at each of the corners of the square are for, they are simply +29,-29,+9 and -9. Any ideas would be great.

 

[berkeman]

You need to give a more specific description of the problem, or attach a sketch of the drawing in the problem.

 

[quicknote]

I can provide a response to this question. The values at each of the corners of the square represent the electric potential at those points. Electric potential is a measure of the potential energy per unit charge at a given point in an electric field. In this case, the values at the corners of the square indicate that there is a non-uniform electric field present.

Now, to answer the question about the magnitude and direction of E at the center of the square, we can use the formula E = V/d, where E is the electric field strength, V is the electric potential, and d is the distance from the point where the electric field is being measured. Since the electric potential at the center of the square is 0, we can assume that the distance from the center to each of the corners is equal.

Therefore, the magnitude of the electric field at the center of the square would be the same as the magnitude of the electric field at the corners, which is given by 0.1uC/d, where d is the distance from the center to each corner.

As for the direction of the electric field at the center of the square, it would be directed towards the corners with positive potential (towards the +29 and +9 corners) and away from the corners with negative potential (away from the -29 and -9 corners). This is because electric field lines always point from higher potential to lower potential.

In summary, the magnitude of the electric field at the center of the square would be 0.1uC/d and its direction would be towards the corners with positive potential and away from the corners with negative potential.