February 24, 2017

Homework Help: physics

Posted by Ann on Saturday, February 3, 2007 at 7:46pm.

The inner and outer surfaces of a cell membrane carry a negative and positive charge, respectively. Because of these charges, a potential difference of about 0.070 V exists across the membrane. The thickness of the membrane is 9.00*10-9 m. What is the magnitude of the electric field in the membrane?

E= difference potential in volts/distance in meters.

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