If a = 3.0 mm, b = 4.0 mm, Q1 = 60 nC, Q2 = 80 nC, and q = 32 nC in the figure, what is the magnitude of the electric force on q?
A. 1.6 N
B. 1.3 N
C. 1.9 N
D. 2.2 N
E. 0.040 N
Answer: B
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