0222_E1_Q

0222_E1_Q - and a double integral, find the electric field...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PHY 0222 STOT Problem Set E1 (January 27, 2010) 1. Some point charges, each of charge + q , are distributed at the corners of a regular star-shaped polygon as shown in Fig. 1. In particular, the two charges on the y axis are located at (0, a ) and (0, - b ), where a > b >0. Find the electric field at the origin. [ Hint: Use the principle of superposition to simplify your calculation. You don’t need to calculate the electric fields of all the charges.] Fig. 1 2. An annular sheet of inner radius a , outer radius b , carries a uniform surface charge density σ (Fig. 2). Fig. 2 (a) Using the principle of superposition
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: and a double integral, find the electric field at a point P on the axis of the sheet. (b) Find the position along the axis at which the electric field is a maximum. Fig. 3 3. A semi-infinite rod carrying a uniform linear charge density λ + lies along the + x axis as shown in Fig. 3. (a) Find the electric field at a point P on the + y axis. (b) If a rod of length L , carrying linear charge density + , is placed along the + y axis with its lower end at a distance h from the origin, what is the electric force acting on the rod?...
View Full Document

This note was uploaded on 10/14/2010 for the course PHYS 2051 taught by Professor Drkwong during the Spring '10 term at CUHK.

Ask a homework question - tutors are online