Magnetic field

The source of electricity is called the device The source of electricity is called the device, which will replace the mechanical or chemical energy to electricity, and when you download the current will produce a constant potential difference on its terminals. If we combine the two poles of the source of direct current through the, Popsicle by the direct current from the positive pole to negative. The direction of current flow has been adopted by contract. In other direction is the current stream of electrons flows. As you know, the body positively electrified shows lack of electrons, negatively electrified body has excess electrons. And the combination of these bodies will guide the flow of electrons from the body indicating their excess to the body in which there is a lack of electrons. Thus, the flow of the stream of electrons is directed from the negative pole to the positive pole, that is the direction of electron flow is opposite to the direction of flow of electric current. Still be considered the right of Electrical Engineering will be based on the accepted direction of current flow from positive pole to negative pole. The flow of current is possible when the circuit is created by electric current. The simplest electrical circuit will be the following combination of elements: the source of current, power, receiver, connecting cables.