1. Lecture 4: Conductors Forces on charges and torques on dipoles

2. Bill Gates: The Road Ahead (1996) The obvious mathematical breakthrough would be development of an easy way to factor large prime numbers.

3. This distance between two point charges is doubled. The force one exerts on the other 1.Is twice 2.Is three times 3.Is one quarter 4.Is one third 5.None of the above

4. Quiz #2 There is a uniform electric field between to plane parallel plates. Rank the strengths of the electric field at the three points in order of increasing strength. +++++++++++++++++++++++++++++++++ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Draw arrows indicating direction of E-field A B C

5. 20.6 Conductors in Electric Fields Where is the charge on a charged conductor? What does the electric field look like inside a conductor? What does the electric field look like outside a conductor?