The magnitude of the electric field

[flex bro]

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

 

[Replusz]

Superposition theorem: calculate the electric field magnitude separately for each 4 charges and then add them as vectors

 

[flex bro]

is there is any angles considered in analyzing the electric field

 

[Replusz]

Sorry, I don’t understand… Just calculate the four forces separately and add them. Your formula was correct