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Lectures
Lecture: 18 (iq16)
Announcement:
1. Two problems in h3.
o
Comment
on Ch17-h3, 005
o
A
modified problem based on Ch17, h3, 010-011.
2. Magnetic field pattern and compass needle.
o
Biot Savart’s law- Micro. The qv source of B, Bqv. Cross
product: Clicker
1-3
o
RHR1 follows from
Biot-Savart law
o
Biot Savart’s law- Macro. The IDL source of B, BI
o
Measurement of BI
from a long wire. Clicker 17-1.
3. B at O of a circular arc Clicker 17-3
4. B due to a long wire segment:Integration.
o
Symmetric case
(textbook example)
o
Long wire approximation
o
Semi-longwire clicker
5. The
three RHRs Clicker
17-4
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