Summary: This program defines electric power and explores in general terms a variety of means by which it is produced, transmitted, and consumed. Efficiencies and inefficiencies relating to energy conservation are discussed in relation to power production, transmission, and consumption, with a particular focus on the efficiencies and inefficiencies associated with the conversion of electricity to light....
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program traces the relationship between magnetism and electricity from the first accidental discovery of induced current. The concepts of electric and magnetic fields are introduced and their representation explored. The features of coils and solenoids are examined to develop the construction of practical electromechanical devices such as solenoid switches and electromagnets. Hand rules...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program explores the basic principles behind the operation of AC and DC motors. An explanation is given about how one or more fixed magnets, either permanent or electromagnetic, can cause linear movement or rotation of a current-carrying wire. A hand rule is developed to predict motor force. Motor torque is explained as a prelude to the practical design of a direct current motor. Specific...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program presents both the theory of electric circuits and basic practical methods of managing circuits safely. The benefits and dangers of ground circuits are investigated, together with safety devices such as fuses and ground fault interrupters. The concept of electric resistance is introduced. Specific modules include Completing a Circuit, Fuses, Circuit Breakers, Ground Circuits, Ground...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program explores how electric energy became an essential tool with the advent of electricity storage, allowing the flow of current to do useful work. Conductors and insulators, voltage, and current are defined and examined, using a water flow model to help ensure understanding. The difference between electron flow and current flow models is explained, and the nature of direct and...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program looks at physics principles behind AC and DC generators. The relationship between a changing magnetic field and the induction of electric current is examined. A hand rule is introduced to predict the generator effect in a linear length of conductor exposed to a changing magnetic field. The behavior of a rotating coil in a magnetic field leads to the practical construction of an AC...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program investigates the application and limitations of Ohm's Law. Series circuits and parallel circuits are described. Using equivalent resistance, practical exercises are developed in the application of Ohm's Law to series circuits, parallel circuits, and circuits of greater complexity. Specific modules include Ohm's Law, Series Circuits, Series Calculations, Parallel Circuits, Parallel...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2008
View online at AVOD
Summary: This program explores basic electricity as it was perceived by Benjamin Franklin and other early theorists, as well as the principles of positive and negative charge, conduction and induction, atoms and electrons, and elementary charge. Coulomb's Law is related in detail, including the torsion balance experiment that led to the breakthrough. Insulators, semiconductors, and superconductors are...
Format: software, multimedia
Publisher / Publication Date: Films Media Group 2007