Most arrangements I've seen have a power source hooked up to a resistor hooked up to a capacitor. Like this http://hyperphysics.phy-astr.gsu.edu/hbase/electric/capchg.html Why? I mean, why can't we directly hook the capacitor to the emf? sounds stupid, I know. Also, resistors follow Ohms, V=IR in their consumption of current and voltage. How does a capacitor consume current and voltage?