Welcome to electricity and electrical engineering! In this introductory sequence you will become familiar with the most important electrical concepts: charge, current, and voltage.

You also learn about the language we use for engineering numbers, units, and notation.

Check out the summary of the math and science preparation that will get you ready for the best experience studying electrical engineering.



Current direction

Conventional current


Basic electrical quantities - charge, current, voltage, power

Conventional current vs. electron current

Numbers in electrical engineering

Defining the standard electrical units

Electric force compared to gravity

Preparing to study electrical engineering

Video vs. Article

When you come across a video and article with the same or similar names, they cover roughly the same ideas. Choose the format that helps you learn best. If you view the video and have more questions, check out the corresponding article because it may go a little deeper into the topic.