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 7.1×102 V lower than the electric potential outside the cell. The thickness of the cell membrane is 0.12 m .

Part a

What is the direction of the electric field within the cell membrane?

tangentially to the cell membrane

part b

What is the magnitude of the electric field within the cell membrane?

Express your answer using two significant figures.

tangentially to the cell membrane

part b

What is the magnitude of the electric field within the cell membrane?

Express your answer using two significant figures.

Explanation / Answer

The electric field always directs from high potential to low potential ,according to the problem ,outside is at higher potential than inside the cell

so the direction of electric field is inward across the cell membrane

Part B) magnitude of Electric field is E = change in potential / distance of seperation = (7.1*10^-2)/(0.12*10^-6) = 5.92*10^5 V/m or N/C

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