TeachEngineering
Teach Engineering: Induced Emf in a Coil of Wire
Students use a simple set up consisting of a coil of wire and a magnet to visualize induced EMF. First, students move a coil of wire near a magnet and observe the voltage that results. They then experiment with moving the wire, magnet,...
CK-12 Foundation
Ck 12: Internal Resistance of a Battery
[Free Registration/Login may be required to access all resource tools.] Batteries have both an ideal internal voltage and a terminal voltage, which is less due to internal resistance. This lesson presents sample problems and a video...
National Institutes of Health
Niehs: Kids' Pages: What Are Electric and Magnetic Fields?
Informational fact sheet on electricity with emphasis on electric and magnetic fields.