Lesson_2.3_Homework

# Lesson_2.3_Homework - Lesson 2.3 Homework 1 At what points...

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Lesson 2.3 Homework: 1. At what points along the symmetry axis perpendicular to the plane of a uniformly charged circular disc of radius R is the magnitude of the electric filed a maximum? 2. When a horizontal glass pane is rubbed with silk, a 2.5-g Styrofoam ball carrying 2.8 μ C of charge floats motionless in air above it. What is the surface charge density of the glass pane? 3. Air becomes a conductor if the electric field in it exceeds 3.0 × 10 6 N.C -1 . (i) If two parallel plates are charged oppositely so that the electric field between them is uniform, what surface charge density on the plates will cause a field of 3.0 × 10 6 N.C -1 between them? (ii) What is the number of fundamental units of charge per square centimeter of the plate? 4. Two equal charges q are placed at points (a, 0), (-a, 0). (i) Determine the electric field at points along the y-axis as a function of y. (ii) What is the maximum field along the y axis? 5.

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## This note was uploaded on 05/01/2011 for the course PHY 2049 taught by Professor George during the Spring '11 term at Edison State College.

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Lesson_2.3_Homework - Lesson 2.3 Homework 1 At what points...

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