# The current in the circuit is 0.5 amperes. How many electrons will pass through the cross section

July 22, 2021 | education

| **The current in the circuit is 0.5 amperes. How many electrons will pass through the cross section of a conductor in one minute?**

To determine the number of electrons that have passed through the cross-section of a given conductor in 1 minute, we use the equality: I * t = q = n * e, from where we express: n = I * t / e.

Constants and variables: I – current in the circuit (I = 0.5 A); t – elapsed time (t = 1 min = 60 s); e is the electron charge (e = 1.6 * 10 ^ -19 C).

Calculation: n = I * t / e = 0.5 * 60 / (1.6 * 10-19) = 18.75 * 10 ^ 19 electrons.

Answer: Within 1 minute, 18.75 * 10 ^ 19 electrons will pass through the conductor.