Conductors and dielectrics in electric fields Body cell membrane electric...

Conductors and dielectrics in electric fields

Body cell membrane electric field (a) Determine the average magnitude of the field across a body cell membrane. A 0.07-V potential difference exists from one side to the other and the membrane is 7.5 x 10^-9 m thick. (b) Determine the magnitude of the electrical force on a sodium ion (charge +e) in the membrane. Assume that the dielectric constant is 1.0 (it is actually somewhat larger).