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A long string with a charge of \mathrm{\lambda } per unit length passes through an imaginary cube of edge ' \mathrm{a } '. The maximum flux of the electric field through the Cube will be -

Option: 1

\mathrm{\lambda a / \epsilon_0}


Option: 2

\mathrm{\sqrt{2} \lambda a / \epsilon_0}


Option: 3

\mathrm{6 \pi a^2 / \epsilon _0}


Option: 4

\mathrm{\sqrt{3}a \lambda / \epsilon _{0}}


Answers (1)

best_answer

The charge on longest diagonal of cube \mathrm{q=\sqrt{3} a \lambda, \phi=\frac{2}{c_0}=\sqrt{3 a \lambda} / \epsilon_0} .

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Gaurav

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