K-Gray Engineering Pathway Digital Library - Engineering Education Wing of the NSDL

DC Motor Tutorial and Animation

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Audience/Grade: 6th Grade - College Sophomore
Discipline(s): Electrical Engineering
Mechanical Engineering
Learning Resource Type: Teaching - Tutorial
Media Type:

 WWW
Author(s): Magnet Lab - National High Magnetic Field Laboratory
Description: Interactive tutorial from the Magnet Lab's Integrated Teaching and Research website. "Electric motors turn electricity into motion by exploiting electromagnetic induction. A simple direct current (DC) motor (see illustration above) The motor features a permanent horseshoe magnet (called the stator because it’s fixed in place) and an turning coil of wire called an armature (or rotor, because it rotates). The armature, carrying current provided by the battery, is an electromagnet, because a current-carrying wire generates a magnetic field; invisible magnetic field lines are circulating all around the wire of the armature. The key to producing motion is positioning the electromagnet within the magnetic field of the permanent magnet (its field runs from its north to south poles). The armature experiences a force described by the left hand rule. This interplay of magnetic fields and moving charged particles (the electrons in the current) results in the torque (depicted by the green arrows) that makes the armature spin. Use the Flip Battery button to see what happens when the flow of current is reversed. Take advantage of the Applet Speed slider and Pause button to visualize these forces better".
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Keywords: DC motor, motor design, electricity and magnetism, electromagnetism
Is Component of Center for Integrating Research & Learning - National High Magnet Field Lab
   
Usage Tip
Use of Resource: Interactive tutorial on the DC motor with links to other related interactive tutorials on the Barlow's Wheel, Faraday Motor, Magnetic Fields, Pixil Machine, and right and left hand rules.
Difficulty: Medium
Interactivity Level: High

   
Version Info
Publication Date: 2008
Platform/Format: WWW
Cost: Free
Download URL: http://www.magnet.fsu.edu/education/tutorials/java/dcmotor/index...
Metadata: IEEE LOM Record
Collection: NEEDS NEEDS