What is the Meaning & Definition of electromotive force

Electromotive force of an electricity generator to work it has to do in order to move electricity through a circuit, both exterior and interior load to the generator itself is called. Thus, the electromotive force establishes the capacity of different electric utensils to activate its electrical charge (for example, in a vehicle battery or a generator). This type of equipment activated force determined on electrical loads and thus these utensils can be operated normally.

Modalities of electromotive force

According to each mode of power one can speak of electromotive force in several ways:
1) the direct sources of electromotive force (in this case the generated current has a constant value),
(2) the sources of electromotive force AC (the current produced is variable over a period of time),
(3) the electromotive force generated by rubbing,
(4) the electromotive force by induction (this happens when it intervenes a magnet moving through their magnetic force),
(5) electromotive force by temperature (when two metals at different temperatures are heated),
(6) electromagnetic force generated by chemical reactions (when a device is intended for obtaining electrical energy from chemical reactions, for example in batteries).

The cause of the electricity

The electromotive force is, in short, the cause of electricity, as in an electric circuit is causing displacement of electrons from one position to another in a controlled manner. It should take into account that the atoms are close occurs when an electric shift due to the State of their respective loads.

A case in point

A concrete example may illustrate what is this type of force. Take the case of a circuit formed by a battery which is connected to a lamp. The lamp has a certain resistance. Connect the terminals of the lamp with the battery it will circulate a current through the circuit and will go from the positive terminal to the negative terminal. To make this possible, the internal loads in the battery should migrate from the higher potential to the lowest.
To determine the electromotive force in this case, the electromotive force is represented by the Greek letter epsilon E, that is equal to the work u divided by the magnitude of the load called q (the work is measured in julos and the magnitude of the load in columbios), finally giving a result in volts.