# lecture10 - Electric Potential(III Text sections 25.5 25.6...

This preview shows pages 1–4. Sign up to view the full content.

Electric Potential (III) Text sections 25.5, 25.6 Fields, potential, and conductors Practice: Chapter 25, problems 33, 43, 49, 63, 67 Read page 789, Van de Graaf generator Potential and Continuous Charge Distributions Potential and Continuous Charge Distributions We can use two completely different methods: 1. 2. Find from Gauss’s Law, then… , r dq k dV e = = source e r dq k V E r , s d E dV r r = = B A A B s d E V V r r

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Example: Thin Uniformly Charged Rod Example: Thin Uniformly Charged Rod L + + + + + + + + + + + + + + + + + O b Total charge Q, uniform linear charge density λ L Q = λ (So ) Find : V at point O Example: Charged Semicircle Example: + + + + + + + + + + R dq Total charge Q, uniform Find : V at centre C (Homework exercise: also calculate the electric field E , which is harder.) C
1) Find the electric field as a function of r using Gauss’s Law. 2) Imagine pushing a “test charge” in from infinity along a radial line: the potential change with each small change dr in distance is dV = − E(r) dr .

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern