Two charges -q each are separated by distance 2d. A third charge +q is kept at mid-point O. Find potential energy of +q as a function of small distance x from O due to -q charges. Prove that the charge at O is in an unstable equilibrium.

Two charges -q each are separated by distance 2d. A third charge +q is

1.	Two charges -q each are separated by distance 2d. A third charge +q is kept at mid-point O. Find potential energy of +q as a function of small distance x from O due to -q charges. Prove that the charge at O is in an unstable equilibrium.
Answer» ANSWER :`(-Q^(2))/(4piepsilon_(0))(2D)/((d^(2)-X^(2)))`

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Two charges -q each are separated by distance 2d. A third charge +q is kept at mid-point O. Find potential energy of +q as a function of small distance x from O due to -q charges. Prove that the charge at O is in an unstable equilibrium.

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