• # question_answer Electric field at the centroid of triangle carrying q charge at each corner will be: A)  $\sqrt{2kq}$            B)  $\frac{1}{2}.\frac{\sqrt{kq}}{{{r}^{2}}}$C)  $\frac{4kq}{{{r}^{2}}}$              D)  zero

Solution :

The resultant of three forces on unit charge a the centroid of triangle would be zero. Hence, electric field will also zero.

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