Consider a portion of a cell membrane that has thickness of 7.50 nm and 1.3 um x 1.3 um in area. A measurement of the potential difference across the inner and outer surfaces of the membrane gives a reading of 92.6 mV. The resistivity of the membrane material is 1.30 x 107 0. m. (a) Determine the amount of current that flows through this portion of the membrane. (b) By what factor does the current change if the side dimensions of the membrane portion is halved? The other values do not change.

Consider a portion of a cell membrane that has thickness of 7.50 nm and 1.3 um x 1.3 um in area. A measurement of the potential difference across the inner and outer surfaces of the membrane gives a reading of 92.6 mV. The resistivity of the membrane material is 1.30 x 107 0. m. (a) Determine the amount of current that flows through this portion of the membrane. (b) By what factor does the current change if the side dimensions of the membrane portion is halved? The other values do not change.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter25: Electric Potential

Section: Chapter Questions

Problem 25.1OQ: In a certain region of space, the electric field is zero. From this fact, what can you conclude...

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