Disposable camera innards
I was taking apart a disposable camera today and found this thing. It looks like it is probably a coil of some sort, and it has a little brother hanging out on another part of the circuitboard. The big one is about 1 cm across, and the little one is about 5mm. What, precisely is it, what does it do, how does it do it, and if I replaced it with a bigger one, what would happen? In idiot-english, please, I'm not well-versed on electrical devices. The little one, especially, reminds me of an ultra-small high-tension coil. Is that what it is? Does it perform precisely the same duty in this circuit?