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змінний/постійний портативний вмикати/вимикати
струм коло, схема лампа розжарювання
проводити (струм) вхідний/вихідний обмотка
притягувати електроінструмент перегорати (про лампу)
несправність переривчасте
електричне коло
підводити (струм) вмикач, перемикач
напруга електричне коло вивід, полюс (2)
запобіжник (пробка) обмотка
постачати (енергію) сполучення

EXERCISE 5 Shorten the sentences to the rate of useful
information:

1. Thousands of years ago, man discovered that when amber is
rubbed with fur or cloth it will attract small light objects.
2. Any material that will allow electricity to flow through it is
called a conductor.
3. A dynamo is a machine that makes electricity when it is made to
rotate, or turn, at high speed.
4. Around the poles of a magnet is an area called magnetic field in
which the magnet exerts its attraction.
5. The amount of electricity that flows called current, is measured
in units called amps.
6. The current and the voltage multiplied together determine the
power, the rate at which the electrical energy is used up by being
converted to other forms of energy.
7. Conductor wires, or leads, in any piece of electrical apparatus or
installation must not be allowed to touch each other, or any other
metal part.
8. There are very many different kinds of switches ranging from a
micro-switch, which is very sensitive, to the large and complicated
ones that are used for high voltages and are sometimes known as
circuit breakers.
9. Some complicated pieces of electrical apparatus, for example radio
and television receivers do not use alternating but direct current.

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