The back left passenger side wheel wont turn on my 2006 Volvo. We just got down with really heavy rain and thunderstorms yesterday so I thought it may have just rusted a tad, however, trying to back out of my driveway and the wheel wont budge it seems to be locked.

I can put the car in reverse and the wheel will move a tad and I can put it in drive and the wheel will move back but it's not getting unstuck. 

I fear that the break may be jammed but I'm not too great with cars so I have no idea how to check that. 

Any help will be greatly appreciated.