And pot is equally often used to mean saucepan but is not accepted here
Should accept 'hob' = aragaz
So, could you also say, "Cratița este pe cuptor"?
Cuptor is the oven, which is "the inside". Not all ovens have gas (or electric) heaters on top of them. But if they do, I guess you can, even if it means something else, and be understood.
i translated this as the "pan is on the stove", which would be sufficient in UK English.