A transformer has a primary 1. connected to a source of input 2. . This 3. a current to the secondary 4. , which provides the 5. voltage. A transformer can be 6. -up or 7. -down. The first has more turns in the 8. winding, whereas the second has more turns in the 9. winding.
5. Watch the video and complete the sentences using two to five words.
1. Transformers can be seen at the or . 2. Transformers are used to or down. 3. Original ranges from 7,200 to 24,900 Volts. 4. Transmission lines connect where transformers and control equipment are. 5. In substations, voltage is transformed to levels. 6. Before reaching homes, voltage is stepped down . 7. A transformer is made of an ; wire is coiled of the core. 8. When electricity flows into the high-voltage coil, it field. 9. The magnetic field created in the other coil. 10. The transformer of a cell phone charger from 120V to 5V.
6. Write the words that correspond to each definition.
1. A strong metal used for construction and manufacturing: 2. Something that is wrapped around a supporting object: 3. The voltage supplied to an electrical device or component: 4. The voltage released by a device: 5. The creation of current by moving an electric conductor through a magnetic field: 6. The central part of something: