Question

The voltage across a membrane forming a cell wall is 84.0 mV and the membrane is 9.40 nm thick. What is the electric field strength (in V/m)

Answer 1

Answer:

8.9*10^6 V/m

Explanation:

The expression for electric field strength E is given as

$E=\frac{V}{d}$

where V= voltage

           d= distance of separation

Given data

$voltage= 84 mV= 84*10^-^3\\distance= 9.4*10^-^9$

substituting our given data into the electric field strength formula we have

$E= \frac{84*10^-^3}{ 9.4*10^-^9} \\\\E= \frac{84}{9.4} *10^-^3^-^(^-^9^)\\\\E= \frac{84}{9.4} *10^-^3^+^9\\\\E= \frac{84}{9.4} *10^6\\\\E=8.9*10^6 V/m$