Three charges $2 q,-q$ and $-q$ are located at the vertices of an equilateral triangle. At the center of the triangle
AIIMS 2019, Medium
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The electric potential at the center of the triangle is calculated as,
$V=\frac{\sum q}{4 \pi \varepsilon_{0}}$
$=\frac{2 q-q-q}{4 \pi \varepsilon_{0}}$
$=\frac{0}{4 \pi \varepsilon_{0}}$
$=0$
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