Find the work done in assembling three charges $q$ each at the vertices of an equilateral triangle of side $a$.
Find the work done in assembling three charges $q$ each at the vertices of an equilateral triangle of side $a$.
1 Answer
VAVidaara Admin
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· 3mo ago
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There are 3 pairs, each with separation $a$:
$$U = 3 \times \frac{kq^2}{a} = \frac{3kq^2}{a} = \frac{3q^2}{4\pi\epsilon_0 a}$$
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Discussion (4)
MT
Thanks a ton, I was stuck on this exact problem for an hour.
C
Pro tip: memorise the standard result, it reappears in many problems.
SD
Adding for context: NCERT covers the base concept in the same chapter.
VA
Great discussion here. If you want more practice on this concept, check the related questions in this category.