Question

oulombs law allows us to find the force between two point charges. Three point charges are held fixed in place as shown in Figure 2. tQ tq -0 Figure 2 onsider the following comment about this situation: There will be zero net electric force on the charge in the niddle due to the other charges. Using Coulombs law, the force due to the +Q charge is positive, and the force due o the -Q charge is negative. The fores cancel Part a o you agree with this statement? Explain Pari: b How does Coulombs law apply to situations in which there are more than two point charges?

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Answer #1

1. Not agree with the statement. We decide force direction by its repelling or attracting not by sign that positive have positive force and negative has negative force. On middle charge both charge (+Q and -Q) have same direction of force.and same amount of force.

2. Where charge are more than two we apply Coulomb law by making pair of charges.

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