Scooby-Doo 2: Monsters Unleashed (2004)

Revealing mistake: When Velma is running from the two one eyed skeletons she goes into what looks like a warehouse and the floor is all wet and in some places there are puddles. When the skeletons come they step into a puddle but the water doesn't even splash or ripple. (01:11:20)

Trivia: When Scooby and Shaggy are at a club, Shaggy talks to Mr. Wickles. He says something about Scooby's nose. The man who is sitting next to Scooby is Neil Fanning, the man who does the voice of Scooby-Doo.

Question: In the scene when the Black Knight Ghost and the 10,000 Volt Ghost are destroyed, I can see how the Black Knight was destroyed but how was the Volt Ghost destroyed and also, how could a jumper cable hurt him? I never understood that part exactly.