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Electricity
1. Electricity is a flow of negative charges called electrons. These electric charges are measured in units called coulombs. Electricity is a very versatile form of energy that can be converted into many other forms of energy, including light and heat, direct current (DC), which flows in one direction only, and alternating current (AC), which changes direction 60 times per second.
2. An electric circuit is an unbroken conducting path from, and back to, a power supply. It has three main parts: the power supply, the conductor, and the load. The power is provided by a generator or battery, the conductor carries the current, and the load is an electric device such as a lamp.
3. Unlike current electricity, static electricity does not flow. It is created when an electrically neutral substance loses or gains electrons, making it, respectively, positively or negatively charged. You can create static electricity by rubbing a balloon on your clothing. Electrons will move from the clothing to the balloon, making the balloon negatively charged and the clothing positively charged. The resulting static electricity on each will attract small, light objects such as pieces of paper.

Ответы:

+ static electricity

− alternative current

− direct current

− resulting electricity

Решение:

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Утверждение «The kind of electricity which can be created at friction is called…» («Вид электричества, который возможно создать трением называется…») следует закончить вариантом ответа «statistic electricity» («статическим электричеством»), так как именно это утверждение соответствует содержанию текста.
Согласно тексту: «You can create static electricity by rubbing a balloon on your clothing» («Вы можете создать статическое электричество трением воздушного шарика об одежду») (фрагмент 3).
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