Lecture 5 - Physics 122A&D Lecture 5 Electric Flux and Gauss Law Course Web Site Contains All Crucial Info

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Lecture 5: Electric Flux and Gauss’ Law • Course Web Site Contains All Crucial Info: http://courses.washington.edu/pedigo/phys122win12/ • Holiday Monday January 16 – No Lecture …Next Week Only Office Hours in Study Center: Wednesday 2:50-3:50 & Thursday 2:50-3:50 • Second WebAssign HW Due Weds Jan 18. • We Register Clickers Starting Today – Follow Link on Course Web Page 1 Physics 122 A & D
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More Distributed Charge 2. Object of Uniform Thickness t ”: – Volume Element = Thickness Surface Element: – Use Charge Per Unit Surface Area [C/m 2 ] – Integral is Now Over Surface Area, Not Volume: a. Rectangular: dA = dx dy b. Cylindrical: dA = R dR d c. Spherical? – See Example 22-7 in Tipler Clicker Q1 2 let , dQ dV t dA t dQ dA   No Spherical Shape has Uniform Thickness 22 and cos ( ) () x kdQ A dA dQ A dA dE E k rr  
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•Q 1 : A Disc ( R = 10 cm, Thickness 0 . 50 cm) Has +3 . 2 10 -9 C Spread Uniformly Through its Volume. The Charge Density = ? A. 1 . 6×10 -11 C/m 2 B. 3 . 2 × 10 -8 C/m 2 C. 7 . 6 × 10 -7 C/m 2 D. 1 . 0 × 10 -7 C/m 2 E. None of These 3
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Still More Distributed Charge 3. Object of Uniform Cross Sectional Area
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This note was uploaded on 01/20/2012 for the course PHYSICS 122 A taught by Professor Darylpedigo during the Winter '12 term at University of Washington.

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Lecture 5 - Physics 122A&D Lecture 5 Electric Flux and Gauss Law Course Web Site Contains All Crucial Info

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