When you spend a chunk o'money to upgrade the AC/DC battery bank on yiour boat & within 4 months have to replace half the batteries because the electrician reverse wired & burnt out the main, and another chunk o'money you'll remember. There's also an interesting topic on stray electrical currents that if you don't protect your boat, electrolysis can literatlly eat the metals on your boat alive, even cause electrical shock drowning/death if your boat isn't protected. Electricity is weird.

Dw it’s more of an AP physics C (and I guess physics 1) question

I don't think it needed much classical music knowledge, more of history and linguistics - 'Klavier' is German for 'piano', and Bach was German, while Mozart was Austrian (both speak German actually, so it's a 50/50)