EE 311 Exam 2_fall09

# EE 311 Exam 2_fall09 - 1 Name _ Oct. 27, 2009 ECE 311 Exam...

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1 Name _____________________________ Oct. 27, 2009 ECE 311 Exam 2 Fall 2009 Closed Text and Notes 1) Be sure you have 18 pages. 2) Write only on the question sheets. Show all your work. If you need more room for a particular problem, use the reverse side of the same page. 3) No calculators are allowed. 4) Write neatly, if your writing is illegible then print. 5) The last 6 pages contain equations that may be of use to you. 6) This exam is worth 100 points. Signature _____________________________

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2 Problem ABET Outcome Points Score 1 15 2 15 3 15 4 (ii) 15 5 5 6 10 7 15 8 10 total 100
3 1. In a material having 2 o εε = , it is found that 2 00 0 223 0 C / m xy z aa a ε =+− D  . (5 pts) (a) Find electric field intensity E. (5pts) (b) Find polarization vector P. (5pts) (c) Find electric energy density.

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4 (15 pts) 2. A conducting solid sphere of radius 5 m is centered at the origin and embedded in a dielectric material with 4 o εε = . If the sphere carries a surface charge of 4 nC/m 2 , find E at (0, 3, 4). (The coordinates are rectangular coordinates).
5 (15 pts) 3. The region for x < 0 is free space and for x > 0 a dielectric of relative dielectric constant 2. There

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## This note was uploaded on 02/12/2012 for the course ECE 311 taught by Professor Peroulis during the Fall '08 term at Purdue University.

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EE 311 Exam 2_fall09 - 1 Name _ Oct. 27, 2009 ECE 311 Exam...

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