CHAPTER XXII 



HOW ELECTRICITY IS USED IN THE HOME 



Problems. i. To learn the properties of magnets and 

 how magnetism is produced by electricity. 



2. To find out what electromagnets are and what they 

 will do. 



3. To understand the working of electric bells and how 

 to install them. 



4. To find out how a simple motor works. 



5. To see how electricity gives heat. 



Experiments. i. To determine laws of magnetic poles. 



2. To magnetize an iron bar in the field of another magnet and in the 

 earth's magnetic field. 



3. To make an electromagnet. 



4. To demonstrate the electric bell. 



Project I. To INSTALL AN ELECTRIC BELL IN MY HOME. 



1. Plan wiring, bell button, and battery location. 

 Concealed or outside wiring. Diagram. 



2. Materials needed. 



3. Make the installation. 



Suggested Projects. 



1. TO MAKE A COMPASS OR A DIPPING NEEDLE. 



2. TO MAKE A PERMANENT PRINT OF A MAGNETIC FIELD. 



3. TO MAKE A TOY ELECTRIC MOTOR. 



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