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4. A point charge +q is located a distance d from
one end of a uniformly charged rod. The rod
has total charge +Q and length L. (The rod
and the point charge are each held fixed in
place.)
+Q
a) What is the force on the point charge due to
the rod?
d
A
• +9
b) What is the force on the rod due to the point
charge? *

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