1. Hw: All Chapter 5 problems and exercises ”Gravitation cannot be held responsible for people falling in love.“ Albert Einstein

2. Outline Applications of Gauss’s Law - The single Fixed Charge -Field of a sphere of charge -Field of a spherical shell -A Line of Charge Conductors and Insulators The electric field of a conductor The field in the cavity of a conductor; Faraday’s Cage

3. Gauss’s Law The total flux of electric field out of any closed surface is equal to the charge contained inside the surface divided by.

4. Conductors and insulators Charges reside at the surface of the conductor Conductor E=0 + ++ + + + + + + + + + + + +

5. Solid conducting sphere with charge Q A E r V r A

6. Electric field of a ball of charge Q Electric field outside of a charged sphere is exactly the same as the electric field produced by a point charge, located at the center of the sphere, with charge equal to the total charge on the sphere.

7. Electric field of a spherical shell Q The field outside the shell is like that of a point charge, while the field everywhere inside the shell is zero.

8. First exam Tuesday, February 15 105 Heldenfels Sections 807 and 808 start at 7 pm Sections 809 and 523 start at 8:10 pm

9. No calculators and cell phones BRING YOUR STUDENT ID!

10. What is included? Chapters 1-4

12. Have a great day! Be prepared for the test!