A) A typical cell membrane is 7.81 nm thick and has an electrical resistivity of 1.28E+7 m. If the potential difference between the inner and outer surfaces of a cell membrane is 76.3 mV, how much current flows through a square area of membrane 1.00 on a side?
B) Suppose the thickness of the membrane is quadrupled, but the resistivity and potential difference remain the same. How much current flows through the same area of membrane now?