What is the difference between voltage and current?
The difference between current and voltage is often compared to water travelling through a pipe. The current measures how much water travels through the pipe. Sometimes you have a big pipe and sometimes you have a little pipe, but neither matters for the current – the current simply measures how much water goes through it. Likewise, “current” means the number of electrons that travel through a wire. The voltage is a measure of how hard the water is being pushed through the pipe. If you’ve got a huge pump driving water through a pipe, the water is pushed through hard. If the pump isn’t working well, it isn’t. Voltage is a measure of the potential difference between one place and another.
