“How does electricity pass from one medium to another for engineering purposes?”


Have you ever wondered what allows for electricity to flow through a circuit? Well, let’s think about it. A circuit usually includes a battery. And this battery is electrochemically charged so that one side has a  positive charge and another is negatively charged. This creates a potential difference, which can be used in a circuit do do work. In order to do that, there must be some form of conductive material hooked up to the battery so that such work can be done. Now, this is where the electrode comes in. An electrode is a conductor that can transport electric current from one medium to another. The electrode in a circuit will be hooked up the negatively charged end called the cathode, and transport it these electrons to the positive end called the anode.

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