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# Plzzzzzzzzzzzzzzoooooooooooooooooooolkoolook solve question number 6.......

Arun
25763 Points
2 years ago

charges be -q, +q and -q.
Distance between two charges = a
Energy of the system $U =\frac{ 1q_{i}q_{j}}{4\pi \varepsilon r_{ij}} ; i=1,2,3; j=1,2,3 ;i\neq j$
putting the values we get Uinitial = $-\frac{3q^{2}}{8\pi \varepsilon a}$
Final energy of the system, Ufinal = $-\frac{q^{2}}{8\pi \varepsilon a}$
Therefore, work required = Ufinal -  Ufinal
= $-\frac{q^{2}}{4\pi \varepsilon a}$
However, the system will become unstable and eventually collapse.