1.2 · 10 ^ 20 electrons pass through the cross-section of the conductor in 2 s. What is the current in the conductor?

t = 2 s.
n = 1.2 * 10 ^ 20.

q = 1.6 * 10 ^ -19 Cl.

I -?

Let us write down the definition for the current strength: I = Q / t, where Q is the electric charge that passes during time t.

Q = n * q, where n is the number of electrons, q is the electron charge.

I = n * q / t.

I = 1.2 * 10 ^ 20 * 1.6 * 10 ^ -19 C / 2 s = 9.6 A.

Answer: the current in the conductor is I = 9.6 A.