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Unformatted text preview: PHYS 411 (Fall 2011): Electricity and Magnetism 1 st Midterm exam: Friday, October 14, 11.0011.50 am. Read the instructions below and do not flip to next page till you are told to do so. Name: Student ID: Useful formulae: da = r 2 sin 6 f dd F= T^'~ V(f] P = Xe V.E = D = e E + P = s ds dcj) dz D = p, It is necessary to show the details of the derivation and not just the final answer for all problems. This is a closed book exam: crib sheets are not allowed. The problems are roughly in order of increasing difficulty (and points). Please write clearly and if you use the backside of a page, then please indicate so. Check that there are total of 5 pages (4 problems). Remember the honor pledge that you signed at the start of the semester. Problem # 1 2 3 4 Total Points scored Maximum points 7 11 12 20 50 1. A charge q (> 0) is placed a distance Id along the zaxis above the infinite conducting x y plane which is grounded (i.e., it has potential zero). A 2nd charge is placed on the zaxis atplane which is grounded (i....
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This note was uploaded on 12/29/2011 for the course PHYSICS 411 taught by Professor Agshe during the Summer '11 term at Maryland.
 Summer '11
 Agshe
 Magnetism

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