A cube of side 'a' has point| Electrostatic

JEE MAIN 2021

24-02-21 S1

Question

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 :

Select the correct option:

$\frac{-\mathrm{Q}}{3 \sqrt{3} \pi \varepsilon_0 \mathrm{a}^2}(\hat{\mathrm{x}}+\hat{\mathrm{y}}+\hat{\mathrm{z}})$

$\frac{-2 Q}{3 \sqrt{3} \pi \varepsilon_0 a^2}(\hat{x}+\hat{y}+\hat{z})$

$\frac{2 Q}{3 \sqrt{3} \pi \varepsilon_0 a^2}(\hat{x}+\hat{y}+\hat{z})$

$\frac{\mathrm{Q}}{3 \sqrt{3} \pi \varepsilon_0 \mathrm{a}^2}(\hat{\mathrm{x}}+\hat{\mathrm{y}}+\hat{\mathrm{z}})$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

Question Tags

JEE Main

Physics

Easy

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