Question

Charge q1 = 2.50 nC is at x1 = 0 and charge q2 = 6.00 nC...

Charge q1 = 2.50 nC is at x1 = 0 and charge q2 = 6.00 nC is at x2 = 3.50 m. At what point between the two charges is the electric field equal to zero? (Enter the x coordinate in m.)

Science   Advanced-Physics   
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Answer #1

The situation can be visualized as

The electric field due to q1 at an arbitrary point x is

And the electric field due to q2 at that point is

Now for the electric field to be zero, we must have

The positive solution for x is

So, the answer to this question is 1.373 m.

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