Questions based on University Physics III (part 1).

- A hollow sphere of inner radius
**a**and outer radius**b**has a constant electric charge density**ρ**.- What is the electric field for values of radius
**r**in the range**r < a**? - What is the electric field for values of radius
**r**in the range**a < r < b**? - What is the electric field for values of radius
**r**in the range**b < r**?

- What is the electric field for values of radius
- A semi-infinite rod has uniform charge density per unit length
**lambda**. What is the electric potential at point**P**, a distance**d**from the end of the rod? - A flat circular sheet of radius
**L**has uniform charge density**sigma**Coulombs per square meter. Compute/estimate the electric field at a point directly above the center of the sheet- if the point is a distance
**r**much much less than**L** - if the point is a distance
**r**much much greater than**L** - if the point is at a distance
**r**comparable to**L**(yes, this is the hard one)

- if the point is a distance