- #1

cdummie

- 147

- 5

## Homework Statement

I have to find a electric field vector and a potential of the point in the origin of the x0y coordinate system (0,0) due to a longitudinal charge placed on a half circle as shown in the picture, with radius a.

## Homework Equations

Coulombs law.

## The Attempt at a Solution

Using Coulombs law:

Vector

**E**has two components:

Which means E=Ey.

Since dQ=Q'dl=Q'adθ

If someone notices any mistakes up here, please point it out, since i haven't noticed any.

Now, for potential:

dl=dy because

**E**has only y component, now when i integrate this i have V=∞, which seems wrong to me, so if someone knows how to solve this please post solution here.