- #1

- 323

- 15

## Homework Statement

Find the expression for the electric field at point M(a,a,0) if the linear charge density is known ( ##Q'## )

## Homework Equations

3. The Attempt at a Solution [/B]

I tried something like this and would like your feedback on it. I separated the triangle into three parts. First i consider only the side on the x-axis and calculate that field.

##E_x=E_{Xx}i_x + E_{Yx}i_y## I hope the notation is clear because i use ##E_x## as the total electric field of a x segment of the triangle and the ##E_{Xx}, E_{Yx}## as the vector compositions of the mention vector. Since its a square they are each ##E_x\frac{\sqrt{2}}{2}##. The same i wrote for the ##E_y## segment as that segment only adds on the vectors on the x segment but are integrated by ##dy## (see the picture). Does this make sense and is it worthwhile to continue adding the third segment, which will have to be integrated by ##dy## and ##dx##? I think i could do tCould you help me with this, it has been struggling with me for a while now xD..