Автор: Пользователь скрыл имя, 20 Декабря 2010 в 17:28, реферат
A stream of electrons in a circuit will develop a magnetic field around the conductor along which the electrons are moving. The strength of the magnetic field depends upon the current strength along the conductor. The direction of the field is dependent upon the direction of the current.
If the force causing the electron flow is unidirectional, the current is called direct. If the force changes its direction of effort periodically, the current is called as alternation.
I.English text
ELECTRIC Current………………………………..…………………………. 2
CONDUCTORS AND INSULATORS …………………………………………2-3
SEMICONDUCTORS …………………………………………………………..3-4
ELECTROMOTIVE FORCE AND RESISTANCE ……...……………………….4
Energy Conversion……………………………………………………….4-5
Dynamos…………………………………………………………………… 5-6
GENERATORS…………………………………………………………………….6
II.Русский текст
ЭЛЕКТРИЧЕСКИЙ ТОК………...……………………………………………… 7
ПРОВОДНИКИ И ИЗОЛЯТОРЫ ……………………………………………..7-8
ПОЛУПРОВОДНИКИ …………………………………………………………8-9
ЭЛЕКТРОДВИЖУЩАЯ СИЛА И СОПРОТИВЛЕНИЕ …...………………9-10
Преобразование Энергии……………………………………………….10
Динамо……………………………………………………………………..10-11
ГЕНЕРАТОРЫ…………………………………………………………………..11
СЛОВАРЬ………………………..………………………………………..… 12-13
СПИСОК ИСПОЛЬЗОВАННОЙ ЛИТЕРАТУРЫ……………………………..14