Which of the following statements is NOT true about membrane potential?

Which of the following statements is NOT true about membrane potential?

-A membrane potential arises when there is a difference in the electrical charge on the two sides of a membrane.

-The generation of ATP in mitochondria and chloroplasts relies on membrane potential.

-An exact balance of charges on each side of the membrane is equal to a membrane potential value of 1.

-Membrane potential contributes to action potential generation in electrically excitable cells such as neurons.