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Q.

An electric charge q is placed at the centre of a cube of side a. The electric flux on one of its faces will be

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a

$\frac{q}{ε_{0} a^{2}}$

b

$\frac{q}{ε_{0}}$

c

$\frac{q}{6 ε_{0}}$

d

$\frac{q}{4 {πε}_{0} a^{2}}$

answer is A.

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Detailed Solution

By Gauss's theorem.

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