- Homework Statement:
- What is the direction of the electric field at the centerpoint P of a charged ring when two pieces are cut off to create respective gaps on the rings circumference as shown in the image?
- Relevant Equations:
- E = Kq/r^2
Surely the field at the centre is zero both before and after the cuts (due to symmetry). Therefore it makes no sense to ask about the field's direction at the centre. What am I missing?The problem is pretty artificial, although that doesn't make it bad. The issue as I see it is that this configuration in 3D is riotously unstable for +or- charge at the center. It will be slightly more unstable with the cuts! Anyone have a more anodyne solution?