We haven't started on Electrochemistry at school yet, but I did manage to find some time to read up on the topic. One thing I've noticed from when I started, is that different books and sites use different terms for the same symbols (For example: One book says Molar conductivity is represented by $\Lambda$, but another says it's Molar Conductance, and another book makes use of both Molar Conductance and Molar Conductivity, albeit inconsistently).
Now, my school textbook, as well as another book, Physical Chemistry by Wallwork and Grant employ the following equation for ionic conductivity:
$$\lambda=F\mu$$
Where $F$ is the Faraday constant and $\mu$ is the ionic mobility of the ion under consideration.
But I saw [another equation on Wikipedia][1]another equation on Wikipedia
$$\lambda=zF\mu$$
Where $z$ is the ionic charge of the ion being considered.
So my question is, which of these equations are right? [1]: https://en.wikipedia.org/wiki/Molar_conductivity