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• Instructor’s weekly informal sessions:

Tu 3:30-4:20, RAS 213 ; Fri 4-5, RLM 5.104

Lecture: 8 Potential and Potential energy + capacitor

Demos:

• Hair on end, Motion of charged particle, E-patterns
• Energy stored in a capacitor

V to E: A dipole system

• E at P with coordinate (x,y)
• E at P where x>>a.

E to V:

• A long rod with a constant linear charge density
• A large plate with a constant areal (“surface”) charge density

Distance dependence of V and E:

• The larger is the spatial extent of the source charge, the slower is the decrease in E.

Parallel plate capacitor:

• Energy stored: U
• Energy density: u=U/volume

Reminders:

• Instructor’s informal session on today. See above for time and place.
• For any unresolved pre-requisite and co-requisite issues, please contact physics departmental coordinator: Pat Morgan (1-8856, RLM5.216) asap.