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

8.9*10^6 V/m

Step-by-step explanation:

The expression for electric field strength E is given as

`E=(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= (84*10^-^3)/( 9.4*10^-^9) \\\\E= (84)/(9.4) *10^-^3^-^(^-^9^)\\\\E= (84)/(9.4) *10^-^3^+^9\\\\E= (84)/(9.4) *10^6\\\\E=8.9*10^6 V/m`