What is the electric field at q due to 4 charges in a square configuration?

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The discussion revolves around calculating the electric field at point q due to four charges arranged in a square. Participants express uncertainty about which equation to use, with one suggesting the formula Ke((|q1||q2|) / a). It is emphasized that the electric field at q is the vector sum of the electric fields from the other charges. Additionally, it is pointed out that the distance between charge Bq and point q is not equal to 'a', indicating a need for careful consideration of distances in the calculations. Understanding the definition of the electric field is crucial for solving the problem accurately.
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I'm not sure what equation to apply in this situation. I'm lead to believe
Ke((|q1||q2|) / a)
Is what I should be applying.

The Attempt at a Solution


No idea thus far.
 
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Welcome to PF;
I'm not sure what equation to apply in this situation. I'm lead to believe
Ke((|q1||q2|) / a)
Is what I should be applying.
What leads you to believe that is the right equation?

Do you know the definition of the electric field?
If you do not, look it up. (online or in your course notes or both)

The electric field at q is the vector sum of the electric fields due to the other charges.
Notice that the distance between Bq and q is not a.
 

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