The magnitude of the electric field

AI Thread Summary
To calculate the electric field at the center of a square with a side length of 42.5 cm, one must consider the contributions from each of the four charges: one at -38.2μC and three at -27.0μC. The electric field can be computed using the formula E = k(q/r^2), where k is the electrostatic constant and r is the distance from the charge to the center. The direction of the electric field will be towards the -38.2μC charge due to its negative charge. The superposition theorem should be applied to find the resultant electric field by calculating the magnitudes and directions of the fields from each charge separately and then combining them as vectors. The approach is confirmed to be correct, focusing on the individual contributions from each charge.
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Homework Statement


Calculate the magnitude of the electric field at the center of a square 42.5cm on a side if one corner is occupied by a −38.2μC charge and the other three are occupied by −27.0μC charges.

Homework Equations

The Attempt at a Solution


E=k(q/r^2) the direction of the electric field will be towards the -38.2μC charge
 
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Superposition theorem: calculate the electric field magnitude separately for each 4 charges and then add them as vectors
 
is there is any angles considered in analyzing the electric field
 
Sorry, I don’t understand… Just calculate the four forces separately and add them. Your formula was correct
 
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