Asked by Jane

Two charges are located on the x axis as shown in the figure. d=10.0 cm, q​1​​ =+6.97 μC, and q​2​​ =−10.4 μC. What charge q​3​​ needs to be placed at position x=3d so that the magnitude of the electric field at the origin is zero?

Answers

Answered by oobleck
you want
3
∑q<sub><sub>i</sub></sub>q<sub><sub>j</sub></sub>/d<sub><sub>ij</sub></sub>^2 = 0
i,j=1
i≠j
for suitable definitions of d<sub><sub>ij</sub></sub>, which you have not provided
Answered by Anonymous
In other words we do not have your figure so we do not really know where the first two charges are located.

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