Multiple Choice
In the figure,all the charges are point charges and the charge in the middle is Q = -3.1 nC.For what charge q1 will charge q2 be in static equilibrium? 
A) 12 nC
B) 6.2 nC
C) 3.1 nC
D) 25 nC
Correct Answer:

Verified
Correct Answer:
Verified
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