Many students are comfortable working with individual resistors, but run into confusion when those resistors are combined into networks. A common point of misunderstanding is the voltage divider: specifically, why the current through both resistors is the same even when their resistances differ.

At first glance, it can seem contradictory. Using Ohm’s law, students often reason that different resistances should imply different currents, or that the voltages across the resistors must somehow be equal. The key is to recognise how series circuits behave.

The intent of this website is to eventually contain comprehensive notes for all the topics which I’ve covered in Electrical Engineering. That is going from Circuits 1 through to later topics in Analog Filtering and Beyond.

My motivation is to have clear resources that I can use as a starting point for any students. Answer any questions that I’ve gotten multiple times.

Ohm’s Law

Ohm’s law relates voltage, current, and resistance:

Test Note. This will be removed… Probably.