Charge that makes the potential energy of three charges at a triangle zero

1. A.
   $-q$
2. B.
   $\frac{q}{2}$
3. C.
   $-2q$
4. D.
   $-\frac{q}{2}$

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1. A.
   $Q = -\frac{2q}{3}$
2. B.
   $Q = -\frac{1}{3}q$
3. C.
   $Q = \frac{3q}{2}$
4. D.
   $Q = \frac{q}{2}$

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1. A.
   $-\frac{\sqrt{2}}{3}q$
2. B.
   $+\frac{\sqrt{2}}{3}q$
3. C.
   $-\frac{3}{\sqrt{2}}q$
4. D.
   $+\frac{3}{\sqrt{2}}q$

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1. A.
   $q = \frac{1}{3}Q$
2. B.
   $q = \frac{2}{3}Q$
3. C.
   $q = - \frac{2}{3}Q$
4. D.
   $q = - \frac{3}{2}Q$

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1. A.
   $\sqrt{2}q$
2. B.
   $\frac{q}{2}$
3. C.
   $\frac{q}{\sqrt{2}}$
4. D.
   $\frac{q}{2\sqrt{2}}$

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1. A.
   $-\dfrac{q}{3}$
2. B.
   $\dfrac{-2q}{3}$
3. C.
   $\dfrac{q}{2}$
4. D.
   $\dfrac{3q}{2}$

Tap an option to check your answer.

1. A.
   $-\dfrac{1}{2\sqrt{3}}q$
2. B.
   $-\dfrac{\sqrt{2}}{3}q$
3. C.
   $-\dfrac{\sqrt{3}}{2}q$
4. D.
   $-\sqrt{\dfrac{2}{3}}q$

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