The oil light came on the Ford Focus that I am.

Absolutely. Check the oil level first. The light is warning about low oil pressure, not level, but with a low level the pump can suck up air which can be compressed. That will cause the pressure to drop. Ten seconds is a long time for an engine to be without oil pressure but it's likely the pressure didn't drop to 0 psi. Most warning lights turn on at around 10 psi so there was likely still oil flowing to the engine bearings.

If the light turns on while driving, stop the engine immediately. Serious engine damage can occur within a few seconds if you keep on driving.