In this worksheet, we will practice calculating the absolute electric potential at a given displacement from a ring of charge.

**Q1: **

A uniformly charged ring of radius 10 cm is placed on a nonconducting table. It is found that 3.0 cm above the centroid of the half-ring the potential is V, taking zero potential to be at infinity. How much charge is contained in the half-ring?

- A C
- B C
- C C
- D C
- E C