here's the question: "which will do more damage, connection a 110 volt appliance into a 220 volt circuit or plugging a 220 volt appliance into a 100 volt circuit?" as i understand it, voltage is the "pressure" that creates current flow. voltage is caused by the potential difference between poles. voltage does not, however, flow ion a circuit, but is instead the cause of flowing. please correct me if i am wrong... but before i can answer the question, what does it mean to say that an appliance is 100-V? the appliance isn't creating voltage? or is this the trick in a trick question?