a closed surface is vacuum encloses charge -q, +2qand+5q. another+q lies outside the surface what is the total electric flux through surface
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Explanation: electric flux = total charge on the surface / Eo
total charge on the surface = 5q+2q-q = 6q
We do not add +q as it is lying outside the surface.
Therefore electric throught the surface = 6q / Eo
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