You may want to review (Pages 746 - 752) . Part A What is the strength of the el

ID: 1581363 • Letter: Y

Question

You may want to review (Pages 746 - 752) .

Part A

What is the strength of the electric field inside the membrane just before the action potential?

Part B

What is the strength of the electric field inside the membrane at the peak of the depolarization?

https://session.masteringphysics.com/problemAsset/1820056/6/23-45.jpg

A 9.2-nm-thick cell membrane undergoes an action potential that follows the curve in (Figure 1).

You may want to review (Pages 746 - 752) .

Part A

What is the strength of the electric field inside the membrane just before the action potential?

Part B

What is the strength of the electric field inside the membrane at the peak of the depolarization?

https://session.masteringphysics.com/problemAsset/1820056/6/23-45.jpg

a) t = 9.2 * 10-9 m

E = V / t

= (-70 * 10-3) / (9.2 * 10-9)

= 7.61 * 106 V/m

b) E = V / t = (40 * 10-3) / (9.2 * 10-9)

= 4.35 * 106 V/m

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