1. Complete the text with the correct words.

ELECTRICITY IN USE

Major uses
Residential electricity powers 1. appliances. In the 2. sector, electricity is used to carry out 3. processes. In transportation it powers train networks, electric 4. , buses, and cars. In the 5. sector it is used by businesses, offices, and other 6. .

How it enters buildings
Electricity may enter a building via 7. or a cable connecting the 8. pole to the building. It then passes through a 9. device containing the main 10. , which isolates mains and internal wires of building.

How it is distributed
A 11. or a live wire carries current from the power supply to the 12. . A 13. wire carries current back to the source, while an 14. wire carries current from the source to the ground to help prevent electric shock.

2.1 After reading the text, answer the question: where does the highest energy consumption in a home come from?

Household Appliances and Electricity Consumption
The vast majority of your electric bill is coming from your larger appliances, not from the blinking lights or the display screens of your electronics plugged in around the house. About 95% of your yearly electricity bill comes from things like your water heater, your home’s heating system, refrigerators and freezers, your oven, washer, and dryer. A refrigerator built in 1985 will use four or five times more electricity than a modern model, and updating your appliances to energy-efficient models could have a huge impact on your electricity bill. A spike in your electricity bill doesn’t always mean you have a problem with your electrical systems, but it could mean you have a problem with one or more of your appliances. Appliances that use motors or compressors will usually begin to consume noticeably more energy before they fail.

Adapted from: https://www.youtube.com/watch?v=zZGi0W35IE8 - How much electricity do my household items use? posted by Baxter companies aperta

2.2 After reading the text in the previous exercise, answer the question: which appliances contribute the most to an electricity bill? aperta

2.3 After reading the text in the Exercise 2.1, answer the question: how much more electricity can an old refrigerator consume than a modern one? aperta

2.4 After reading the text in the Exercise 2.1, answer the question: what can be done to reduce household electricity consumption? aperta

2.5 After reading the text in the Exercise 2.1, answer the question: what can a spike in the electricity bill mean? aperta

2.6 After reading the text in the Exercise 2.1, answer the question: when do appliances with motors or compressors often consume noticeably more energy? aperta

3. Listen to an expert talking about plugs. Complete the sentences with suitable words.

1. Countries do not use the same to connect devices to the power network.
2. The brown and blue wires carry the current around the electric of a house.
3. The current that travels in a house’s wiring system is current.
4. wires have a voltage close to zero.
5. wires help you to avoid receiving an electric shock.
6. The main role of a is to prevent fires in the case of overheating of wires.