Segments in this Video

Electric Fields (03:27)

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The evolution of electric field theory is examined. Methods developed for indicating the strength of an electric field around a charged object, and the direction in which the field acts, are described.

Magnetism (01:49)

Properties of magnets are examined. The attractive and repulsive forces of magnetized objects are explored.

Magnetic Fields (02:01)

It is an accepted theory that magnetized objects are surrounded by fields of magnetic force. Properties and behavior of magnetic fields are examined.

Electromagnetism (01:27)

In 1819 Danish physicist Hans Christian Oersted discovered a relationship between electricity and magnetism. Today, electromagnetism is the basis for devices such as electric motors and electric generators.

The Left (or Right) Hand Rule (03:01)

When electric current flows in a wire there is a region of magnetic force which encircles the wire. The Right-Hand Rule and the Left-Hand Rule describe the direction of this magnetic force.

Electric Coils (02:46)

The potential for a magnetic field surrounding a current-carrying wire to do useful work increases greatly when that wire is bent into a simple coil. Properties and applications of magnetic coils are explored.

Solenoids (02:42)

A solenoid is a tightly-wound helix of current-carrying wire. Properties of solenoids, and their similarities to bar magnets, are examined.

Solenoid Switches (01:28)

One important use of a solenoid is as a mechanical switch which is turned on and off by electricity. The construction, function, and application of solenoids are explored.

Electromagnets (01:27)

Electromagnets are used in many practical everyday applications. The scientific principles which underlie the construction and function of electromagnets are explored.

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Electricity and Magnetism

Part of the Series : Electricity: A 3-D Animated Demonstration
DVD (Chaptered) Price: $99.95
DVD + 3-Year Streaming Price: $149.93
3-Year Streaming Price: $99.95

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Description

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 are introduced to help determine the alignment of currents and fields. Specific modules include Electric Fields, Magnetism, Magnetic Fields, Electromagnetism, Left-Hand Rule, Electric Coils, Solenoids, Solenoid Switches, and Electromagnets. Correlates to all National CTE Organizational Standards (including the provisions of the Perkins Act). A viewable/printable instructor’s guide is available online. A Shopware Production. (21 minutes)

Length: 21 minutes

Item#: BVL38728

ISBN: 978-1-4213-8974-5

Copyright date: ©2008

Closed Captioned

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