My electric stovetop developed a fault which caused a short circuit inside the unit (sparks flying and all). The fault occurred as one of the knobs came loose and the metal strut that was supporting it fell down into the unit. The casing of the stovetop is earthed to a nearby power socket, with a resistance of 0.5 ohms. There is no RCD installed on the circuit. No circuit breaker or fuse was tripped during the fault, and immediately after it occurred I turned the circuit off at the fusebox.
Here's the part that confuses me. A clean metal teaspoon was lying on the casing of the stove but not anywhere near the heating element. It wasn't touching anything else. Immediately after I turned the stove off, I realised that the spoon actually got stuck to the casing of the stove - I had to apply quite a bit of force to pull it off, and there was a very small but noticeable ridge that could be felt with my fingers on both the spoon and the stove where they were touching.
My question is, how could the spoon have bonded to the stove if there was no way for it to have a potential difference (i.e. it wasn't touching anything else except the metal casing of the stove?). Is there some physical explanation that doesn't require current to flow through the spoon (and thereby explain heating as a result of resistance?). The spoon was made of stainless steel.
Obviously, I've had an electrician look at it, but apart from checking that it passes the earth test, he couldn't give me a reason why the spoon could have bonded to the stove, nor why the circuit breakers weren't tripped.
I am not an engineer by the way, although have some basic technical and physics knowledge (coming over from stats and data science SE).