Hi, When you put different resistors, lets say some light bulbs, in a circuit in parallel, how come there can exist a greater potential difference over the light bulbs in parallel then in series with the same light bulb. I know this is because there is a greater current, but how come it affects the potential difference? There is still the same energy/coulomb needed to pass through the resistor, no? So how is the higher current, the higher amount of charged particles, affecting the amount of energy(pot. diff.) needed to pass through the resistor? Are the charges between themselves affecting the energy needed? My second question is: how come you can you put a higher watt light bulb in a circuit, which has subsequently more resistance, and still create the needed amps? If you try this with a simple parallel circuit, the higher resistance you create the less amps you will get. So how come a light bulb or a washing machine can get the needed amps? The washing machine probably uses a transformator right?, but what about the light bulb then? Anyways, thnx in advance to anyone who likes to help me out a bit.