Recent content by tom75

Yes sorry the length of each side is 1 and this is a square with A (upper left), B(upper right) C(lower right) D(lower left) with respectively charges +q,-2q,+2q,-q

I have just begun studying electrostatic and I'm trying to do this exercize: We have a square with charges +q , -2q, +2q, -q1)Compute the electrostatic field \vec{E}at the center of the square. I did this way : I find \vec{E_A}=\frac{q}{2 \pi \epsilon_0} \vec{u} {E_B}=\frac{-q}{ \pi...