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Using the information from a standard reduction potentials table (see link below), the standard cell potential for the zinc/lead cell is then: EÂºcell = EÂºcathode - EÂºanode = -0.13 - (- 0.76) = 0.63 V.
At rest, the membrane potential is -60 millivolts (mV), which means that the inside of the cell is negative in comparison to the outside. This is ultimately due to an unequal distribution of ions, especially sodium and potassium, between the outside and inside of the cell (see Table 1).t rest, neurons (and most other cells, too) exhibit an electrical charge difference across the membrane. This difference, or membrane potential, can be measured with tiny electrodes connected to a voltmeter or an oscilloscope.