# Consider a system of three point charges ont the x axis. Charge 1 is at x=0, charge 2 is at x=0.20m, and charge 3 is at x = 0.40m. In addition, the charges have the following values: q1 = -19uC, q2=q3=+19uC. Find the the point where E =0 between x =0.20m?

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Find the point where E =0 between x = 0.20m and x = 0.40m

Find the point where E =0 between x = 0.20m and x = 0.40m

The situation as described in the problem is shown in the figure.

Let the position where the system charges will have net net intensity

Intensity at N due to

Intensity at N due to

Intensity at N due to

where Coulomb's constant,

So considering the equilibrium we can write

So we have

So location of

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The point where ( E = 0 ) between ( x = 0.20 ) m is approximately ( x = 0.26 ) m.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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