The electric current is 6.923 x 10^39 Amperes.
To calculate the electric current, we can use the equation:
I = Q/t
Where:
I is the electric current
Q is the charge
t is the time
Given that 2.70 x 10^15 mol of potassium ions pass through the cell membrane in 3.90 x 10^-25 seconds, we can substitute these values into the equation:
I = (2.70 x 10^15 mol) / (3.90 x 10^-25 s)
Simplifying the equation, we get:
I = 6.923 x 10^39 A (Amperes)
Therefore, the electric current is 6.923 x 10^39 Amperes.