If you experimentally increase the concentration of Na outside a cell while maintaining other ion concentrations as they were, what would happen to the cell's membrane potential

Given what we know about membrane polarization, we can confirm that If you experimentally increase the concentration of Na outside a cell while maintaining other ion concentrations as they were, the cells membrane potential would increase and be positively charged.

Increasing the concentration of Na outside a cell would cause there to be an increase and a build-up of positive charges outside of the cell. Due to the fact that the ion concentrations inside the cell remain constant, we can confirm that there will be a net positive charge on the outside of the cell and this will cause an increase in the membrane's potential.

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