Point on the line of two charges where the net field or force is zero

1. A.
   $r=\frac{2}{\sqrt{5}-2}$ right to pt. B
2. B.
   $r=\frac{2}{\sqrt{5}-2}$ left to pt. A
3. C.
   $r=\frac{2}{\sqrt{5}+2}$ right to pt. B
4. D.
   $r=\frac{2}{\sqrt{5}+2}$ left to pt. A

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1. A.
   $\frac{L}{4}$
2. B.
   $2L$
3. C.
   $4L$
4. D.
   $8L$

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1. A.
   $\frac{L}{4}$
2. B.
   $4L$
3. C.
   $8L$
4. D.
   $2L$

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1. A.
   $\left( \frac{\sqrt{2}}{\sqrt{2} - 1} \right)L$
2. B.
   2 L
3. C.
   $\frac{L}{2}$
4. D.
   $\left( \frac{\sqrt{2}}{\sqrt{2} + 1} \right)L$

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1. A.
   $\dfrac{d}{3}$ units
2. B.
   $\dfrac{d}{2}$ units
3. C.
   $\dfrac{2d}{5}$ units
4. D.
   $\dfrac{3d}{4}$ units

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1. A.
   $x = 2L$
2. B.
   $x = 2.5L$
3. C.
   $x = 3L$
4. D.
   $x = L$

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