I read that a voltmeter measures the voltage difference between two points, but this doesn't make much sense to me. Let's take the following picture: http://www.bbc.co.uk/staticarchive/346c39cfd7376d612ba49cad06febd926fe7b9f6.gif Would it make sense if the voltmeter was receiving current from both sides, so that it could measure the kinetic energy difference of the electrons it was receiving from each side, working out the difference in voltage? Would it make more sense to say that since components in parallel receive the same voltage, we can assume that whatever the voltmeter is getting, the bulb is also getting (in this case I don't see how the voltmeter is actually measuring anything between two points but is instead measuring what it's receiving and we assume the component is getting the same voltage)? Can you also assume that since voltage is divided between all components in a series circuit, (and that the component eats all the voltage it is provided with?), so you can assume that whatever the voltmeter is getting, the measured component is using 100% of that voltage showing on the voltmeter? Since kinetic energy (which I was taught was voltage) is converted into different forms such as heat, would you say the voltage is actually used/eaten by a component/resistor, but since I = V/R if voltage is reduced by a component then the current in the circuit is reduced too (which would explain why resistance lowers current)?