ps02 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of...

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MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of Physics 8.02 Spring 2010 Problem Set 2 Due: Tuesday, February 16 at 9 pm. Hand in your problem set in your section slot in the boxes outside the door of 32-082. Make sure you clearly write your name and section on your problem set. Text: Liao, Dourmashkin, Belcher; Introduction to E & M MIT 8.02 Course Notes. Reading Assignments: Week Two: Gauss’s Law and Electric Potential Class 4 T/W Feb 9/10 Gauss’ Law Reading: Course Notes: Sections 4.1-4.2, 4.6 Class 5 R/T Feb 11/16 Electric Potential Reading: Course Notes: Sections 3.1-3.5, 3.7-3.8 Class 6 F Feb 12 PS02: Gauss’s Law Reading: Course Notes: Sections 4.1-4.2, 4.7-4.8 Week Three: Electric Potential President’s Day – M 2/15 / M Classes on T 2/16 Class 5 W03D1 T Feb 16 Electric Potential Reading: Course Notes Sections 3.1-3.5, 3.7-3.8 Class 7 W03D02 W/R Feb 17/18 Electric Potential; Equipotential Lines and Electric Fields Expt.1: Electric Potential; Configuration Energy; Reading: Course Notes: Sections 3.1-3.5 Experiment: Expt. 1: Electric Potential Class 8 W03D3 F Feb 19 PS03: Electric Potential Reading: Course Notes: Sections 3.1-3.5, 3.7-3.8
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Problem 1 (10 points): Concept Questions. Explain your reasoning. Concept Question 1: A pyramid has a square base of side a, and four faces which are equilateral triangles. A charge Q is placed on the center of the base of the pyramid. What is the net flux of electric field emerging from one of the triangular faces of the pyramid? 1. 0 2. 0 8 Q ε 3. 2 0 2 Qa 4. 0 2 Q 5. Undetermined: we must know whether Q is infinitesimally above or below the plane? Concept Question 2: A charge distribution generates a radial electric field / 2 ˆ rb a e r = Er r where a and b are constants. The total charge giving rise to this electric field is 1. 0 4 a πε 2. 0 3. 0 4 b Problem 2 (10 points): Non-uniformly charged sphere A sphere of radius R has a charge density 0 (/ ) rR ρ = where 0 is a constant and r is the distance from the center of the sphere.
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This note was uploaded on 04/20/2010 for the course PHYSICS 8.02 taught by Professor Hughes during the Spring '08 term at MIT.

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ps02 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY Department of...

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