(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The questions asks to consider the following comment about a situation where there are three point charges held fixed along a linear line.

"There will be zero net electric force on the charge in the middle due to the other charges. Using Coulomb's law, the force due to the +Q charge is positive, and the force due to the -Q charge is negative. The forces cancel."

It then asks if we agree with the statement, and to explain.

2. Relevant equations

Since we are dealing with Coulomb's law F=Kq1q2/r^2

3. The attempt at a solution

So there is a positive source charge (+Q) and a negative source charge (-Q) and there is a positive test charge (+q) place in the middle. I don't believe that there wouldn't be a net electric force on the charge in the middle, but I'm having trouble gathering my thoughts, or not sure where to start?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Coulomb's Law with 3 Point Charges

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