Electricity

by-products, low cost, improved service.
e) Batteries, generators, electric motors and other devices.
Task 3. Guess if the statements are true or false.
1. Electricity has many useful properties: it is clean and generates no by-products. (True/False)
2. The indicator of nation development is how much electricity is consumed per capita. (True/False)
3. Electricity is transmitted to distant parts of the country by a combination of computer networks. (True/False)
4. The consumption of electricity has doubled every ten years. (True/False)
5. With the appearance of the electrical motor, power cables replaced transmission shafts, gear wheels, belts and pulleys in the 20-th century workshops. (True/False)
Task 4. Make a sentence out of the two parts:
1. Electricity . . .
2. The generator, a new source of electricity . . .
3. Today consumption of electricity . . .
4. Electricity was used for the first time . . .
5. Since the beginning of the 20-th century . . .
a) the wide industrial use of electricity has begun throughout the world.
b) has completely transformed our everyday life.
c) for industrial purposes in the silver workshops in Paris.
d) was also developed in Paris.
e) per capita is an indicator of the state of development of a nation.
Task 5. Read the text about the concept of electrical current, make up five questions to the text and ask another team.
The concept of electrical current.
In the beginning of the 17th century Sir William Gilbert discovered that many substances could be electrified by friction. Gilbert named this effect "electric" after the word "electron" - the Greek name for amber. In 1756 the great Russian scientist M.