Question

particles having a charge of 10 microcoulombs are placed on vertices of equilateral triangle of 10 cm find the work done by a person pulling them to infinite position no chance in no change in kinetic energy

Answer 1

Dear Student


$$\begin{gathered} Workdoneinmovingthechargetoinfinitedis\tan ceapartisequaltoworkinbringingthechargestothesepoints \\ W=\frac{K{q}_1{q}_2}{r_{12}}+\frac{K{q}_1{q}_3}{r_{13}}+\frac{K{q}_3{q}_2}{r_{32}} \\ {q}_1=q_2=q_3=10\mu C \\ {r}_{12}=r_{13}=r_{32}=10cm \\ W=\frac{3k{q}^2}{r}=\frac{3\times 9\times {10}^9\times (10\times {10}^{-6}{)}^2}{10\times {10}^{-2}} \\ W=27J \end{gathered}$$


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