Inductance Topic

Self Inductance

Concept 1 demo

Ruhmkorff induction coil on wooden base with large cylindrical secondary coil between black metal supports, mechanical vibrator assembly at right, discharge terminals on top showing small blue spark, and Xantrex DC power supply reading approximately 9.7 V and 0.8 A

Ruhmkorff Induction Coil

Demonstrates how mechanical interruption of DC current produces high-voltage pulses through electromagnetic induction. Students see why transformers require changing current — steady DC produces no induced EMF — and observe …

LR Circuits

Concept 1 demo

Acrylic self-induction demonstrator board with iron-core inductor, copper bus bars, porcelain standoffs, incandescent bulb at top, and knife switch at lower left, connected to Xantrex HPD 15-20 power supply set to 12.0 V

RL Demonstration

Students observe inductive transients in an RL circuit: the incandescent bulb flashes brightly each time the knife switch opens or closes, revealing current surges during magnetic field buildup and collapse. …

RLC Circuits - DC

Concept 1 demo

LRC ringing circuit board on wooden base with inductor coil, capacitors, and red banana plug leads, connected to an Agilent function generator (left) and Agilent digital oscilloscope (right) displaying square wave input and damped oscillation output

LRC Ringing Circuit

Demonstrates underdamped oscillations in a series RLC circuit driven by a square wave. Students observe the "ringing" waveform — damped sinusoidal oscillations at the circuit's natural frequency — and connect …