Help finding the voltage in a uniform E-field

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Homework Help Overview

The discussion revolves around calculating the voltage across a membrane given the electric field strength and the thickness of the membrane. The context involves the electric fields present in biological membranes, specifically focusing on a uniform electric field scenario.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationship between electric field strength and voltage, with one participant attempting to apply the formula E = -V/d. There is also a correction noted regarding a previous calculation, indicating some confusion in the initial approach.

Discussion Status

The discussion includes attempts to clarify the calculations and the relevance of previously posted questions. There is an indication of multiple threads addressing similar issues, which may affect the clarity of the current discussion.

Contextual Notes

Participants are navigating through potential confusion due to overlapping threads and previous posts on the same topic, which may influence the flow of the current discussion.

elowe93
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Homework Statement


Membrane walls of living cells have surprisingly large electric fields across them due to separation of ions. What is the voltage across an 8.67-nm-thick membrane if the electric field strength across it is 9.16 MV/m? You may assume a uniform E-field.

Homework Equations



E=-Vd

The Attempt at a Solution



.00912V/m=-V/(8.67e-9m) =7.9e-11 V
 
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correction****

sorry i ment that for my answer i got -9.24e6 V/m. i was looking at the wrong thing.
 
Didn't you just post this exact same question?
 

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