If the inward and the outward electr...

If the inward and the outward electric flux through a closed surface be ` phi _(1) and phi _(2) ` , the charge inside the closed surface is

`(phi _(1) - phi _(2))in _(0)`

`(phi _(2) - phi _(1))in _(0)`

`(phi _(1) + phi_(2) )//in _(0)`

`(phi _(2) - phi _(1) ) //in _(0) `

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