# SE_02 - Electromagnetics School of Electrical and Computer...

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Electromagnetics School of Electrical and Computer Engineering University of Tehran Supplementary Exercises SE-02 Subject: The Electrostatic Field Fall Semester 1384 Problem 1: (Griffiths P2.6) Find the electric field a distance z above the center of a flat circular disc of radius R , which carries a uniform surface charge σ . What does your formula give in the limit ? Also check the case . R R z >> Problem 2: (Griffiths P2.7) Find the electric field a distance z from the center of a spherical surface of radius R , which carries a uniform charge density σ . Treat the case R z < (inside) as well as (outside). Express your answer in term of total charge q on the sphere. R z > Problem 3: (Griffiths P2.10) A charge q sits at the back corner of a cube, as shown. What is the flux of E r through the shaded side of Figure 1?

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Problem 4: (Griffiths P2.18) Two spheres each of radius R and carrying uniform volume charge densities ρ + and , respectively, are placed so that they partially overlap (Figure 4). Call the vector from the
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## This note was uploaded on 02/06/2011 for the course ECE 423 taught by Professor Dolatabadi during the Spring '11 term at Amirkabir University of Technology.

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SE_02 - Electromagnetics School of Electrical and Computer...

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