Under certain circumstances, potassium ions (K+) in a cell will move across the cell membrane from the inside to the outside. The potential inside the cell is − 85.5 mV and the potential outside the cell is zero. a. What is the change in the electrical potential energy of a single potassium ion as it moves across the membrane?b. Does the potential energy of the potassium ions increase, decrease, or remain the same as the ions move from the inside to the outside?

Explanation:

q = Charge in the potassium ion =

e = Charge of electron =

= Change in potential =

Change in electric potential is given by

The energy is

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.