Most electronic journals do not require a username & password if you are using them from a PC on the University campus.
If you are off-campus and you start your search from a Library web page (such as Library Search or the list of e-journals) you will usually be prompted to log in with your campus ID and password to verify that you're a Newcastle University user. Once you have done this, you will then have access to the resource as though you were on campus.
There are a small number of e-journals which are only available off-campus using RAS or via a unique username and password.
Further information about off-campus access for each journal can be found via the Find It link (see below)
If you are unsure please contact your Liaison Librarian.