Induced emf in an electric motor
Channel: Terry Sturtevant
Date: 20/04/2011

Demonstration of induced EMF in a power drill (Based on some discussions here, I've labelled this "induced" emf instead of "back emf" to avoid confusion. If you read the comments, you'll see more about this. Both of the effects discussed are due to induced currents in an inductor, which is what I wanted to show.