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This text provides an insightful overview of practical applications of electromagnetism, focusing on key devices such as electro-magnetic relays and simple direct current motors. It explains the fundamental principles of how forces act on these devices, illustrating concepts like the downward force direction on motor sides for anti-clockwise rotation. The moving coil loudspeaker is also discussed, showcasing the versatility of electromagnetism in various applications. By exploring these examples, readers gain a better understanding of how electromagnetism powers everyday technologies.
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Practical Applications of Electro-magnetism © David Hoult 2009
Electro-magnetic Relay © David Hoult 2009
Simple Direct Current Motor © David Hoult 2009
The force acting on side a – b will be directed © David Hoult 2009
The force acting on side a – b will be directed downwards so the rotation will be © David Hoult 2009
The force acting on side a – b will be directed downwards so the rotation will be anti-clockwise (viewed from the front of the motor) © David Hoult 2009
Moving Coil Loudspeaker © David Hoult 2009