Question

Three equal charges, 2.0 x 10^-6 C each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Find the Coulomb force experienced by one of the charges due to the rest two.

Answer 1

Three charges are held at three corners of a equilateral trangle.
Let the charges be A, B and C. It is of length 5 cm or 0.05 m
Force exerted by B on A = F₁ force exerted by C on A = F₂
So, force exerted on A = resultant F₁ = F₂  

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