Physics · 2021
JEE Main · 24 February 2021, Shift 1 · Q15
A cube of side ' a ' has point charges +Q located at each of its vertices except at the origin where the charge is - Q. The electric field at the…
A cube of side ' a ' has point charges +Q located at each of its vertices except at the origin where the charge is - Q. The electric field at the centre of cube is :
Official answer
(3)
$\displaystyle \frac{-2 \mathrm{Q}}{3 \sqrt{3} \pi \varepsilon_0 \mathrm{a}^2}(\hat{x}+\hat{y}+\hat{z})$
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JEE Main 2021 Physics question, with the answer from NTA’s final answer key. Where our answers come from.