Physics 2213
Homework #8
Spring 2010
*** Prelim Exam #2
is scheduled for 7:309 PM on Thursday evening, April 8.
It will cover
textbook Chapters #24 & 2729 + sections 23.2 & 26.4;
Homeworks #69;
Lab Units #46 + Pre
Labs;
and all relevant lecture questions, examples, theory, discussions, & demonstrations.
As
noted at lecture, the rough points breakdown for Prelim Exam #1 included:
Lecture 73 points,
HW 74 points, Lab 15 points.
So you can expect similar coverage for this exam.
GRAPHING
and PROGRAMMABLE CALCULATORS may NOT be used at the exam. ***
*** Persons with conflicts or special needs please contact Prof. Elser ([email protected]) ASAP to
make appropriate arrangements. ***
Read:
Chapter 28, intro., sections 28.2 thru 28.7
Basic Ideas:
Magnetic Fields & Forces
BiotSavart Law & Vector Superposition Principle
Various versions of the Right Hand Rule for Magnetic Field sources
Magnetic Dipoles & the analogy between Magnets & Current Loops or Solenoids
Math Skills:
Vector Cross Product & 3D Vector Geometry
Path Integrals
Symmetry
Learning Goals:
(Be sure you understand where and how each goal in each assignment applies to our
homework, discussion, lecture, and lab activities.)
*
Use the BiotSavart Law and integration to determine magnetic fields from simple electric
current distributions — straight lines or line segments, circular loops or arcs.
*
Use symmetry to deduce geometric properties of magnetic fields due to specific sources and
sketch their magnetic field lines.
*
Use Ampere's Law to determine magnetic fields due to electric current systems of
sufficiently high symmetry — long straight wires, solenoids, toroids, planar sheets.
*
Use the Principle of Superposition to determine the net magnetic field produced by
combinations of magnetic field sources.
*
Calculate magnetic field values from electric current values and viceversa.
*
Translate an equation for a magnetic field as a function of position into a graph conceptually
(without detailed calculations) in any dimension.
*
Determine magnetic forces between currentcarrying wires and loops.
*
Use the various forms of the RightHand Rule to relate magnetic field, electric current
directions, and magnetic forces.
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 Spring '10
 Work, Magnetic Field

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