# Calculating Current given the number of electrons and positive ions

## Homework Statement

In a fluorescent tube of diameter 3 cm, 10 *1018 electrons and 2.5 * 1018 positive ions (with a charge of +e) flow through a cross-sectional area each second. What is the current in the tube?

## Homework Equations

Current is I = (delta Q)/(deta T)

## The Attempt at a Solution

delta t is given as 1 second, but how do u calculate the change in charge given this information?