(Solved): Using the symmetry of the arrangement, calculate the magnitude of the electric field in N/C at the ...

Using the symmetry of the arrangement, calculate the magnitude of the electric field in N/C at the center of the square given that \( q_{a}=q_{b}=-1.00 \mu \mathrm{C} \) and \( q_{c}=q_{d} \) \( =+4.05 \mu \mathrm{C} \). Assume that the square is \( 5 \mathrm{~m} \) on a side. \( q_{a} \) \( q_{\mathrm{b}} \)