chapter22-part2

# chapter22-part2 - Electric field of a point charge E = EA =...

• Notes
• 6

This preview shows pages 1–3. Sign up to view the full content.

1 Electric field of a point charge 2 0 0 2 4 1 ) 4 ( r q E q r E EA E ± = ± = = = Φ πε ε π Applying Gauss’s Law Select the Gaussian surface, such that the point of interest lies on the surface This surface must me some imaginary geometric surface, not a real surface. It may be in empty space, embedded in a solid body, or both. We evaluate Gauss’s law on the surface. We pick it such that a geometric symmetry of the charge distribution helps us to simplify the calculation (sphere, cylinder)

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

2 Electric field in a conductor Under electrostatic conditions, charges do not move. This means that E inside the conductor is zero, or otherwise charges would move. Calculate the flux through an arbitrary Gaussian surface inside the conductor. Since E =0 , the flux will be zero, meaning, there is no charge enclosed by the surface. Since this can be done for an arbitrary surface, we conclude that the charge resides at the surface !!!
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