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Cell Membranes and Dielectrics Many cells in the body have a cell membrane whose inner and...

Cell Membranes and Dielectrics Many cells in the body have a cell membrane whose inner and outer surfaces carry opposite charges, just like the plates of a parallel-plate capacitor. Suppose a typical cell membrane has a thickness of 8.2×10−9 m , and its inner and outer surfaces carry charge densities of -5.3×10−4 C/m2 and +5.3×10−4 C/m2 , respectively. In addition, assume that the material in the cell membrane has a dielectric constant of 5.5.

Part A . Find the direction of the electric field within the cell membrane.

A) into the cell or B) out of the cell

Part B

Find the magnitude of the electric field within the cell membrane. Express your answer using two significant figures.

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