Question

charges of +15c,-15,+20and -50c are placed in order at each corners of square of side 0.2m.calculate the intensity of electric field at the point of interaction of diagonals

Answer 1

I hope that the diagram I have drawn for myself matches the one in your question. I have a triangle with sides 20 and 10 and an angle of 120º between them By the cosine law I found the third side to be 26.4575. You said you found the maginitude, I hope we match. After that, .