{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Fa08-MT2-Huang-Exam

# Fa08-MT2-Huang-Exam - University of California Berkeley...

This preview shows pages 1–5. Sign up to view the full content.

University of California, Berkeley Physics 7B, Fall 2008 ( Xiaosheng Huang ) Midterm 2 Monday, 11/3/2007 6:30-8:30 PM Name:___________________________ D/L Section:____________________________ 1) (20 pts.) A thin rod of length l carries a total charge Q distributed uniformly along its length. Determine the electric field along the axis of the rod starting at one end. That is, find E ( x ) for x 0 in the figure below, both its direction and magnitude. Answer:

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

View Full Document
O R 1 R 2 x σ 2) (20 pts.) A flat ring of inner radius R 1 and outer radius R 2 (see the figure below) carries a uniform surface charge density σ . a ) Find the electric potential along the axis (the x axis), assuming the electric potential at infinity is zero. Answer:
b ) Find the magnitude and the direction of the electric field along the axis by using the relationship between the electric potential and the electric field. Answer:

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

View Full Document
a b 1 b 2 3) (25 pts.) A capacitor consists of two concentric spherically-shaped conductors. The smaller one has radius a , and the larger one has inner radius b 1 and outer radius b 2 .
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