Electromagnets, Motors, and Generators AA

Unlock the secrets of electromagnets, motors, and generators! Learn how they work and their vital roles.

Sort the following descriptions of functions into electromagnets, motors, and generators. Electromagnets I cause the domains in ferromagnetic metals to align when I add electrical current. I create magnetic fields by opening and closing a circuit. I can be strengthened by adding more wire coils. Motors I turn electrical energy into mechanical energy. I can be strengthened by increasing the strength of the electromagnet inside me. I use electricity to create motion Generators I turn mechanical energy into electrical energy. I create or generate alternating current. I can be strenghtened with faster motion. Sort the following common uses of electromagnets, motors, and generators. Electromagnet When a doorbell is pressed, the button closes a circuit, which magnetizes a hammer inside. A crane in junkyard picking up cars can be turned off to drop the car. Motor I take electrical energy to make a fan move. I use a battery to move an electric toothbrush Generator I can take water flowing through a dam to make electricity. I can be used for back-up power if your power goes out. Use Motors Washing machine Electric car Blow dryer Blender Electric can-opener Use Generators Wind turbine Power plant Hydroelectric dam Steam turbines Hand-cranked flashlight Which magnets will attract and which will repel? (select all correct answers) A will attract B will attract C will attract D will attract A will repel B will repel C will repel D will repel Fill in the blanks for the statements below. A generator contains the same parts as an electric motor but runs in reverse. A generator converts mechanical energy into electrical energy. An electric motor contains both permanent magnets and electromagnets and generates mechanical energy from electrical energy. Electromagnets are temporary magnets that can be turned on when electrical current passes through a closed circuit, and turned off when the circuit is opened. Static electricity is formed when their is a buildup of electrons in an object. Electrons tend to space out, so when their is a buildup of electrons, they are easily discharged to other conductive objects, such as metal. Electrons repel each other, which is why static electricity can cause your hair to stand up, but are attracted to positively charged particles. Friction helps to generate a buildup of electrons. Lightning is an example of static electricity