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Закрепление изученного
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insulator
To revolve
To transmit
Continuous
The capacity to absorb heat varies between substances.
To know the melting point of the metal in use is necessary.
There are various kinds of electric circuits such as …
What concepts are very important in study of electric current?
What does the short circuit often result from?
What is the SI SYSTEM?
What is it V=I ×R ?
There is electricity _____ in the world. It is present in the ___, whose particles are held together by its forces; it reaches us from the most
distant parts of the _____ in the form of _________.
From 1800, when Volta announced his _______, electrical research became _______ among the
world’s scientists in innumerable .__________.
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Выберите отрывок текста, который соответствует аудио
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Что пугает говорящего?
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Что соответствует аудио?
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Что соответствует аудио?
potential difference
alternating current
The electrical potential between two points in a circuit is known as the potential difference or p.d. between the points.
measurements of potential difference and electromotive force
A conductor is an electrical ______(usually a metal) which offers very ____ _______ to electrical current.
Commonly used semiconductor
materials include silicon and germanium, cadmium sulphide, gallium arsenide, etc.
to determine direct current
The electric current is
Kinetic energy is
Static electricity is
Potential energy is
The direct current is
Lightning is
to electroplate
Выберите заголовок для текста:
Rechargeable cells are often connected in series to form a storage battery,
a car battery being an example; a storage battery is frequently called an
accumulator. The cells of the battery have a reversible chemical action and,
when current is passed through them in the “reverse” direction (when compared
with the discharging state); the original material of the electrodes is re-formed.
This allows the battery to be repeatedly discharged and charged.
An analog device uses one of the following effects:
alternator
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