Are you familiar with Ohm's Law? V = IR That, in a word, is why. The DC circuit can be modeled as a bunch of resistors, capacitors, and inductors. Capacit

Are you familiar with Ohm's Law? V = IR That, in a word, is why. The DC circuit can be modeled as a bunch of resistors, capacitors, and inductors. Capacitors and inductors are more complicated than resistors, but similar. Intuitively, voltage is the ability to force current through the devices. Reducing voltage reduces ability to force current through. Your notion of dropping voltage increasing current is probably rooted in power. Perhaps you are thinking about AC transformers, where halving the voltage does lead to doubled current. You can think of a transformer as playing with this equation while maintaining static Power: P = VI