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Tu 3:30-4:20, RAS 213 ; Fri 4-5, RLM 5.104
Midterm
2: Th 7-8:45pm, WCH 1.120
Lec. 22 Chapter 30
Magnetic
force:
1. On a moving charged particle: F=q v x B
·
Circular motion
·
Helical motion
·
Cyclotron
·
Mass
spectrometer: Text problem 18, HW8 Q10-11.
·
Hall effect: Sec
30.5
2. On a current segment: F=iL x B.
·
Current balance
·
Force on ||
currents
·
Force anti-|| currents.
Magnetic-current
identities:
·
Successive
divisions of a bar magnet.
·
Magnetism at the
microscopic level: B-patterns of a loop and a magnet.
·
Torque on a bar
magnet
·
Torque on a current
loop
·
Put all together.
Reminder:
·
Prepare for
midterm 2:
o
Course summary: Please familiarize yourself with the part relevant
to midterm 2.
o
Pay attention to
the physics in HW5, HW6 and HW7 + Magnectic force law
for current segment.
o
Review examples posted in Lec21.