midterm2_review

# midterm2_review - Midterm 2 Review (Friday 2-4pm in 248...

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Midterm 2 Review (Friday 2-4pm in 248 LeConte) Anthony Tagliaferro Problem 1: Electric ﬁelds and potentials Figure 1: For each conﬁguration, ﬁnd the potential and electric ﬁeld along the z-axis. Each object is centered around the z-axis. a) A ring of charge of radius R and charge Q . b) A disk of radius R and charge Q . c) A cylinder of radius R , height L , and charge Q . Problem 2: Sphere with non-constant charge den- sity A sphere of charge has a charge density of ρ = αr and radius R . a) What is the total charge of the sphere? b) What is the electric ﬁeld inside and outside of the sphere? c) Find and graph potential of the sphere, taking the potential to be zero at inﬁnity. 1

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Problem 3: A Capacitor Figure 2: A capacitor, before and after inserting a conducting slab. Two, conduncting ﬂat squares with side length L , are used to create a capac- itor. They are separated by a distance 3 d and then each plate is connected to one terminal of a battery. After this is set up, slide a thick slab of conduct-
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## This note was uploaded on 06/30/2010 for the course PHYSICS ?? taught by Professor Zettle during the Spring '08 term at Berkeley.

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midterm2_review - Midterm 2 Review (Friday 2-4pm in 248...

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