Question

A charged particle q is placed at center O of cube of length L(ABCDEFGH). Another same charge q is placed at distance L from O. Then the electric flux through ABCD is

Answer 1

Given that,

Charge particle = q

Length of side of cube = L

Another charge = q

Distance of charge from O = L

We need to calculate the electric flux through ABCD for inside charge

Using formula of electric flux

$\phi=\dfrac{q}{\epsilon_{0}}$

Put the value of into the formula

$\phi=\dfrac{q}{6\epsilon_{0}}$

We need to calculate the electric flux through ABCD for outside charge

The electric flux through ABCD for the charge placed outside the cube as the charged inclosed is zero.

Hence, The electric flux through ABCD is $\dfrac{q}{6\epsilon_{0}}$