Physics · 2019
JEE Main · 11 January 2019, Shift 1 · Q15
Three charges Q, + q and + q are placed at the vertices of a right-angle isosceles triangle as shown below. The net electrostatic energy of the…
Three charges Q, + q and + q are placed at the vertices of a right-angle isosceles triangle as shown below. The net electrostatic energy of the configuration is zero, if the value of Q is :
Official answer
(2)
$\displaystyle \frac{-\sqrt{2} q}{\sqrt{2}+1}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.