Question

The voltage across a membrane forming a cell wall is (80.0 mV) and the membrane is (9.00 nm) thick. What is the electric field strength?

a) (8.89 X 10^6 V/m)
b) (7.20 X 10^5 V/m)
c) (8.89 X 10^7 V/m)
d) (7.20 X 10^6 V/m)

Answer 1

The electric field strength across the membrane is 8.89 x 10^6 V/m.

Step-by-step explanation:

To find the electric field strength, we can use the formula:

Electric Field Strength = Voltage / Distance

In this case, the voltage across the membrane is 80.0 mV and the thickness of the membrane is 9.00 nm.

Converting the voltage to volts: 80.0 mV = 0.080 V

Converting the thickness to meters: 9.00 nm = 9.00 x 10-9 m

Substituting the values into the formula:

Electric Field Strength = 0.080 V / (9.00 x 10-9 m) = 8.89 x 106 V/m

Therefore, the electric field strength is 8.89 x 106 V/m.