Chapter 28, intro., sections 28.2 thru 28.7
(Be sure you understand where and how each goal in each assignment applies to our
homework, discussion, lecture, and lab activities.)
Use the Biot-Savart 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, along with integration as needed, to determine the
net magnetic field produced by combinations of magnetic field sources.
Calculate magnetic field values from electric current values and vice-versa.
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 current-carrying wires and loops.
Use the various forms of the Right-Hand Rule to relate magnetic field, electric current
directions, and magnetic forces.
Use the analogies between current loops, solenoids, and permanent magnets to deduce
properties of magnetic fields and forces produced by current loops and solenoids.
For extra practice:
Q's #Q28.1-3, 5-15
E's & P's #28.9, 13, 21, 25, 31, 33, 39, 45, 63, 69
To be prepared for Wednesday-Friday, Mar. 25-27, at your 2nd weekly Discussion section:
#28.69 & 70
to justify your results.
[Thick Cylindrical Shell]
of the magnetic field B(r) vs.
distance r from the axis of the cylinder from r = 0 to r > c.
[Flat Current Sheet]
tell you about the directions and
magnitudes of the magnetic fields above and below the current sheet?
A rectangular wire loop of
dimensions D and H that carries electric current I
situated a distance y directly beneath a long straight
horizontal wire that carries current I
, as shown .