1. Translate the Text.

2. Finish sentences:

1.There are two types of electricity, namely .2.Both of them are made up of…3. For a long time it was the only…. 4. They differ in their ability to serve… 5. The electricity to be obtained by rubbing… 6. As a result he was the first scientist in...7. 17 Galvani observed that the legs… 8. He thought that electricity was…. 9. However, to carry on such experiments …10. He tried his experiment several times and …11. He spent the next few years trying to invent….12.To increase the effect obtained with one pair …13. 25 A wire was connected to the first d…14. The year 1800 is a date to be remembered: for the first time…

3. Answer the questions:

1. What types of electricity do you know?

2. What is the difference between electricity at rest and electricity in motion?

3. What kind of experiments did Galvani carry on?

4. What did Franklin prove?

5. What are the two kinds of electrical charges?

6. Who was the first to produce a continuous current?

7. What was Volta?

8. What can you say about the behaviour of static charges?

9. What did Volta take interest in?

10. What did Volta's discovery result in?

11. What did Volta's device consist of?

12. Where did he spend the rest of his life?

***

”Electric current”

Read and remember:

1.flow 2.direction 3.current 4.is known 5. that is direct current 6.The simplest source 7. power 8.negatively charged terminal 9.the letters 10..stand for 11.alternating current 12.use 13. lightning 14.purposes 15.go through 16.apply 17.continuous current 18.construct 19.we cannot imagine 20.is familiar with 21.used 22.devices 23.vacuum cleaners 24.refrigerators 25.washing machines 26.trains 27.owing 28.numerous 29. application 30.only

1.протікає 2.напрямок 3. струм 4. відом 5. це постійний струм 6. Найпростіше джерело 7.енергія 8. негативно зарядженого затиск 9. букви 10. означають 11.змінний струм 12.вживати,використовувати 13.освітлення 14.цілі 15. проходити через 16. використовувати 17.безперервний струм 18.сконструйовувати 19.ми не можемо уявити 20. знайом з 21.звикли 22.єпристрої 23.пилососи 24.холодильники 25.мийні машини 26.потяги 27. завдяки 28. численні 29. застосування 30.тільки

1. Read the Text:

ELECTRIC CURRENT

1. When the electrons flow in one direction only the current is known to be d. c. that is. direct current. 2. The simplest source of power for the direct current is a battery, (i. е. from the negatively charged terminal to the positively charged terminal). 3.The letters a. c. stand for alternating current4. The current under consideration flows first in one direction and then in the opposite one.5. The a. c. used for power and lightning purposes is assumed to go through 50 cycles in one second. 6. Yablockov was the first to apply a. c. in practice.7. The first source of continuous current was constructed by Volta in 1800. 8. Now we cannot imagine modern civilization without the electric current. 9. Every student is familiar with the important part which the electric current plays in everyday life. 10. We used many electrical devices in our everyday life: electrical lamps, vacuum cleaners, refrigerators, washing machines, and so on. 11. Telephones, lifts, electrical trams and trains, radio and television have been made possible only owing to the electric current. 12. But the electric current has the numerous industrial application.