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Physics 212
Spring 2003
2/20 HW Handout
E Fields 1
Name___________________________
Due Monday 2/24
1) For each situation below, find the electric field (magnitude and direction) at the location
indicated and then the force (magnitude and direction) on the charge at that location. The
charges are listed below in terms of qo and each square is length ro on a side. Show your
reasoning. Leave you answers in terms of k, qo, and ro or Eo = kQ/r2. See example in lecture
notes.
Q1 = 6qo Q2 = -4qo Q3 = -3qo
a) Find the field at the location of Q1 and the force on Q1.
Q1
Q2
Q3
b) Find the field at the location of Q3 and the force on Q3.
Q1
Q2
Q3
c) Find the field at the location of Q2 and the force on Q2.
Q1
Q2
Q3
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