英语翻译谁会翻译这篇文章?题目是Electromotive Force下面是文章：An excess of electr

英语翻译
谁会翻译这篇文章?题目是Electromotive Force
下面是文章：An excess of electrons at one end of a condu+ctor and a
deficiency at the other end can be obtained by connecting the ends of the conductor to the terminals of a battery or a geb erator.In fact ,the property of batteries or generators is to drive the free electrons that they gave inside them continuously from one terminal to the other against the electrostatic forces.This property of generators or batteries tend to make an electric current flow is indicated by saying than they have an electromotive force(e.m.f.).On
the other hand for an electric current to flow in a conductor than is connected between the two terminals of a generator or a battery,
there must be a potential difference or voltage between the two terminals.In other words we can say than the e.m.f of a battery or a generator maintains a potential difference between the terminals.
The poteential difference is expressed by the work done per unit charge when it passes between the two terminals.The work to displace electric charges is done by a battery,which transforms chemical energy into electrical energy and by generator,which transforms mechanical energy into electrical energy.
We have seen that the electric current in a conductor is actually a flow of negative charges but by tradition an electric current is considered as a flow of positive charges from the positive to the negative terminal.Although this is traditional idea is wrong,it is convenient for everyday use.

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