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Вариант № 4 1) Translate the following text: ELECTRIC CURRENT
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2) Give the English terms for:
индуктивность, ревер¬сировать, магнитное поле, пересекать, полупериод, амперметр, соединять, прибор, поле, полюс.
inductance, to reverse, magnetic field, to cross, half cycle, ammeter, to connect, a device, a field, a pole.
3) Give synonym for the following words:
Installation - establishment, strength - power, to turn on - activate, to decrease – to decline, to cut off – to break.
4) Translate into Russian, noting the predicate in the Passive Voice:
1. Insulation resistance is measured by self-contained instruments.
2. Electric conductors are divided into distinct groups.
3. When the resistances are very great, the comparison Potential at different points may be made by means of one electrometer.
Вариант № 4
1) Translate the following text:
ELECTRIC CURRENT
An electric current is a stream of electrons driven through a conductor. When two ends of a conductor are connected to two points at different potential, such as the terminals of a battery, we say that there is an electric current in the conductor.
The current will not flow unless there is an electric circuit. The electric current is considered to flow the negative to the positive terminal. The magnitude of the current depends simply on the rate of flow of electrons along the conductor. A difference of electric pressure is necessary to maintain a flow of electricity in a conductor. Different substances differ in electrical conductivity because of the ease with which their atoms give up electrons.
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