Radiophysics. Халюшева Г.Р. - 45 стр.

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ОГУ | Оренбург

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to furnish – предоставлять, доставлять
to disconnect – разъединять, расцеплять
to substitute – заменять
resistance – сопротивление
Georg Ohm (1787 – 1854) – a German physicist
R=V/I – resistance is equal to potential difference divided by current.
porcelain – фарфор
rubber – резина, каучук
and the like – и другие подобные (вещества)
insulator – изолятор, непроводник
property – свойство
silicon – кремний
to overestimate – переоценивать
11.3 Exercises
11.3.1 Give Russian equivalents to the following words without using a dictionary:
ampere ohm
battery oxide
ebonite rheostat
electron selenium
germanium volt
magnetic
11.3.2 Read and translate the text
11.3.3 Answer the following questions:
1. What is an electric current? 2. What is the unit of current? 3. What can an electric current do? 4. What is
necessary to cause an electric current to flow? 5. What are the most common sources of electromotive force? 6. How does
current flow in various substances? 7. What is the unit of resistance? 8. What is R equal to? 9. What substances do we call
insulators? 10. What semiconductors do you know?
11.3.4 Transform the word–combinations according to the model. Translate them into Russian:
model: earth surface – the surface of the earth;
electron concentration, neutron research, energy conversion, reflection capability, research programs,
communication means, air circulation.
11.3.5 Translate the word–combinations:
a) radio and radar equipment; city water–supply system; high–speed production process; ground–space
communication station; high–voltage transmission lines; radio–wave length stabilization.
b) left–right movements; up–and–down movements; not–very–distant future; left–hand plates.
11.3.6 Define the type of the conditional sentences:
1. In case there is no current in a conductor, there can be no electric field within it. 2. Should a permanent magnet
be moved in and of a coil of wire, both the magnet and the coil would be used as a simple electric generator. 3. Providing 
        to furnish – предоставлять, доставлять
        to disconnect – разъединять, расцеплять
        to substitute – заменять
        resistance – сопротивление
        Georg Ohm (1787 – 1854) – a German physicist
        R=V/I – resistance is equal to potential difference divided by current.
        porcelain – фарфор
        rubber – резина, каучук
        and the like – и другие подобные (вещества)
        insulator – изолятор, непроводник
        property – свойство
        silicon – кремний
        to overestimate – переоценивать

        11.3 Exercises



        11.3.1 Give Russian equivalents to the following words without using a dictionary:


        ampere ohm
        battery oxide
        ebonite rheostat
        electron selenium
        germanium volt
        magnetic

        11.3.2        Read and translate the text

        11.3.3        Answer the following questions:


         1. What is an electric current? 2. What is the unit of current? 3. What can an electric current do? 4. What is
necessary to cause an electric current to flow? 5. What are the most common sources of electromotive force? 6. How does
current flow in various substances? 7. What is the unit of resistance? 8. What is R equal to? 9. What substances do we call
insulators? 10. What semiconductors do you know?

        11.3.4        Transform the word–combinations according to the model. Translate them into Russian:

      model: earth surface – the surface of the earth;
      electron concentration, neutron research, energy conversion, reflection capability, research programs,
communication means, air circulation.

        11.3.5        Translate the word–combinations:


      a) radio and radar equipment; city water–supply system; high–speed production process; ground–space
communication station; high–voltage transmission lines; radio–wave length stabilization.
      b) left–right movements; up–and–down movements; not–very–distant future; left–hand plates.


        11.3.6        Define the type of the conditional sentences:

       1. In case there is no current in a conductor, there can be no electric field within it. 2. Should a permanent magnet
be moved in and of a coil of wire, both the magnet and the coil would be used as a simple electric generator. 3. Providing

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