The electric flux through the whole cube = {Q\over \varepsilon_0 }
The electric flux through one face = {1\over 6}{Q\over \varepsilon_0 } \mu Vm
The electric flux through the whole cube = {Q\over \varepsilon_0 }
The electric flux through one face = {1\over 6}{Q\over \varepsilon_0 } \mu Vm