Question 581: Electrostatics & Capacitance

Question

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

Accepted Answer

Both the charges are identical and placed symmetrically about $$ABCD$$. The flux crossing $$ABCD$$ due to each charge is $${1 \over 6}\left[ {{q \over {{ \in _0}}}} \right]$$ but in opposite directions. Therefore the resultant is zero.

Answer

$$q/4\,\pi \,{ \in _0}L$$

Answer

zero

Answer

$$q/2\,\pi \,{ \in _0}L$$

Answer

$$q/3\,\pi \,{ \in _0}L$$

Electrostatics & Capacitance

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

Choose the correct answer: