Cite a Poem From a Book. EasyBib can help you cite a poem from a book, here's how: 1  Type in the ISBN of your text book (find inside the front of the book).  If more than one book is listed, double check the details and click Select on the correct book.
Inside a speaker, an electromagnet is placed in front of a permanent magnet. The permanent magnet is fixed firmly into position whereas the electromagnet is mobile. As pulses of electricity pass through the coil of the electromagnet, the direction of its magnetic field is rapidly changed.peakers come in all shapes and sizes, enabling you to listen to music on your iPod, enjoy a film at the cinema or hear a friendâs voice over the phone.
Electromagnets are used to control the switches in relay. This is important especially when it comes to things like making a telephone call. The first telephones made use of a type of relay called a reed switch it not only helped to connect calls but performed the rudimentary logic and memory functions.ou can say that the electromagnet made much of the modern age possible harnessing electricity as a practical force in the same way that mankind used windmills and dams to harness wind and water. Here are some of the ways that electromagnets are used. diagram of how a magnetic levitation train works credit:BBC.