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МатематикаВопрос:
2) What must the science of electricity begin with?
Ответ:
Наука об электричестве должна начинаться с изучения электрического заряда. Это фундаментальное свойство материи, которое лежит в основе всех электрических явлений.
Ответ: С изучения электрического заряда.
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- 1) What are the principles of electricity?
- 3) Are there any differences between energy and matter? What are they?
- 4) What is recognized as an original substance now?
- 5. What effects does the current flow produce?
- 6. How is the heating effect detected?
- 7. What does the heat produced depend upon?
- 8. What is called "heat loss"?
- 9. How is the magnetic effect set up?
- 10. What is the main condition of the magnetic effect existence?
- 11. When does the chemical effect occur?
- 12. What concepts are very important in study of electric current?
- 13. What forms an electric circuit?
- 14. What materials are the best conductors and insulators?
- 15. What kinds of electric circuits do you know?
- 16. How can we open and close the circuit?
- 17. When are electrical devices connected in series?
- 18. What is an example of a series circuit?
- 19. What can you say about «parallel» circuits?
- 20. What does the short circuit often result from?
- 21. Why do electrons move along the circuit?
- 22. What does the strength of the magnetic field depend upon?
- 23. What does the direction of the field depend upon?
- 24. What is the way of alternating current electrons?
- 25. How does the alternating voltage power supply reverse the polarity of terminals?
- 26. What do semiconductors include?
- 27. How does the atomic structure of semiconductors influence their properties?
- 28. What phenomena influence semiconductors?
- 29. What are the semiconductor devices applied for?
- 30. How do semiconductors help in solving engineering problems?
