Grade levels: Senior High (10-12)

Examines the use of a compass needle in navigation and links its behaviour to the Earth’s magnetic field. Explains how other common magnetic objects work and identifies the connection between an aurora display and magnets.

The concept of electromagnetism is introduced and investigated. The principles discussed are then applied to the workings of a malfunctioning speaker.

Viewers apply motor-effect principles to the design of electric DC motors. A quantitative investigation is performed to determine the force on a conductor in a magnetic field. Design, advantages and applications of DC motors are presented.

Auroras provide a context to study moving charges within a magnetic field. Shows that moving electric charges experience a force in magnetic fields and quantifies this force, and gives its direction using hand rules.

Investigates induction and provides explanations of the effect based on magnetic field-current interactions. Discussions with musicians and audio-recording personnel links the concept of electromagnetic induction to sound equipment.

Rotates a loop of wire in a magnetic field, returns to basic principles to explain the observations, and then compares generators to motors. Analyses the nature of alternating current and computes the effective values of sample circuits.

Provides additional information, experiments and problems on concepts presented in the video programs.

A torsion balance is used in a quantitative analysis of the relationship among charge, distance and electrostatic force to verify Coulomb’s law. Compares Coulomb’s law of electrostatic force and Newton’s law of universal gravitational force.

Provides additional information, experiments and problems on concepts presented in the video programs.

Provides additional information, experiments and problems on concepts presented in the video programs.