Instructional Video
Derek Owens

Derek Owens: Physics: Dc and Ac

9th - 10th
Identify and understand the differences between direct and alternating currents. [8:29]
Instructional Video
Crash Course

Crash Course Physics #35: How Power Gets to Your Home

9th - 10th
In this video [8:33] episode of Crash Course Physics, Shini talks to us about how power gets to our homes. It's kind of amazing when you think about it and much more complicated than it may seem!
Instructional Video
Crash Course

Crash Course Physics #36: Ac Circuits

9th - 10th
In this video episode of Crash Course Physics, it's time to delve into the world of AC Circuits (or Alternating Currents). We've talked about how they change voltage, which helps transmit electricity over long distances, but there's so...
Instructional Video
Khan Academy

Khan Academy: Ac Analysis Superposition

9th - 10th
We break a sinusoidal input voltage into two complex exponentials. Using superposition, we can recover the complex output signals and reassemble them into a real sinusoidal output voltage. [7:19]
Instructional Video
Khan Academy

Khan Academy: Ac Analysis Intro 2

9th - 10th
Here's a preview of how AC analysis is going to work. To get ready we need to review some of the ideas from trig and complex numbers. [8:57]
Instructional Video
Khan Academy

Khan Academy: Ac Analysis Intro 1

9th - 10th
Solving circuits with differential equations is hard. If we limit ourselves to sinusoidal input signals, a whole new method of AC analysis emerges. [6:42]