Hi, 1) Can anyone explain to me from a conceptual standpoint, why increased current leads to an increased voltage drop across a resistor? Mathematically, I know V=IR. But it doesn't make sense to me why increasing a current across a resistor would lead to a greater drop in energy per coulomb of charge? Clearly, if one increased resistance, more energy per coulomb would be dissipated in order to traverse the resistance. But as V=IR tells us, if we increase the number of coulombs flowing through a resistor per second, each coulomb is subject to a greater drop in energy. It does make sense to me why increasing voltage or decreasing resistance would lead to a greater current flow. But for a given resistor, if you pass more current through it, why would a greater energy be lost per coulomb than if you had passed less current through it? 2) One last question. A greater voltage, or EMF, from say a battery, leads to each coulomb having a greater electric potential energy. A greater voltage also leads to a greater current. Are these interrelated phenomenon? Is there some sort of causation, like a larger energy per charge helps to induce more charge to flow per second? This doesn't really make any sense to me, but I'm just throwing it out there as an illustration of what I'm asking. Thanks!