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Lectures
Lecture 8: iq06
1. Q+neutral
atom always leads to an attractive force.
2. Charging
o
by contact
o
by induction
3. Revisit
the case of neutralizing the positively charged tape by rubbing.
4. Discussions
on two hw problems in h3(15.X84 and 15,X42).
5. Field
by a charged rod:
o
Field pattern
o
A typical field DEx
due to DQ at y
o
Ex obtained by integrating from
–L/2 to +L/2.
o
Final form: Replacing x by r. Large r and small r limits.
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