In this animated activity, learners examine how residual magnetism causes magnetic hysteresis.

In this animated object, learners examine how magnetic waves are transmitted as radio signals.

In this animated lesson, students view the operation of an electromechanical relay. A brief quiz concludes the activity.

Learners examine how metal detectors function. This object includes animation and sound.

In this interactive lesson, students view the operation of a solenoid and read about its application. A brief assessment concludes the activity.

Learners compare electromagnetic quantities with the voltage, current, and resistance quantities of an electrical circuit. A brief quiz completes the object.

Learners examine an animation that shows how an AC voltage is produced as an armature rotates within a magnetic field. Ten review questions complete the learning object.

Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

The learner studies how electrons travel from one atom to the next. Examples demonstrate how voltage is created by the use of a battery or through magnetism. A quiz completes the activity.

Students answer five questions concerning magnetism.

Learners read an explanation of how the Magnetron Ignition System uses a solid state switching component, a step-up transformer, and magnetism to provide a high voltage spark in a one-cylinder combustion engine.