Electric Potential Across a Cell membrane in a typical living cell, the electric

Question

Electric Potential Across a Cell membrane in a typical living cell, the electric potential inside the cell is 6.5 times 10^-2V lower than the electric potential outside the cell. The thickness of the cell membrane is 0.11 mu m. What is the direction of the electric field within the cell membrane? outward across the cell membrane inward across the cell membrane tangentially to the cell membrane What is the magnitude of the electric field within the cell membrane? Express your answer using two significant figures. E = _____ V/m

Explanation / Answer

The Electric field is the negative gradient of Potential.

E = - dV/dr

so, the magnitude of Electric field inside the cell membrane will be:

|E| = (6.5 x 10-2)/(0.11 x 10-6) = 590909.10 V/m

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