When an electrical potential difference measured cell 1 volt. But when resistance 2 ohms into the two terminals of the cell voltage of 3 volts. Power cells have many internal resistance, ohm.
When the power cell to measure the voltage at 1 volt. But when the two-ohm resistance to both terminals of the cell voltage is 3 volts. Cell electrical resistance within a few ohms.
When the cell to measure the voltage has 1 v. But when 2 resistance ohm to poles of measuring voltage has 3 V. Electric resistance cells within a few ohms.