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electricity and magnetism.

ENERGY.

- The electrical energy.
- electrical components and circuits.
- Electrical Magnitudes.
- Measurement of electrical quantities.
- Electromagnetism.
- Electrical Machines. Dynamos and alternators.
- electric motors.

THE ELECTRICITY.

All matter consists of atoms that have a positive nucleus and negative electrons in the crust.



A body is loaded and has power when you have electrons more or less.

I. ELECTRICAL CIRCUITS AND COMPONENTS

The driver circuits are formed by closed trajectories along which the electrons.
An elementary circuit has a generator, drivers and receptor. Also installed in the switching elements and control.



The most common control elements are:

SYMBOL

NAME
button
switch
switch
Key crossing or crossing
relay

SERIES AND PARALLEL CIRCUITS.

There are several ways to connect the elements of electrical circuits: Circuit
series - are connected one after another and each element is subject to a different voltage, but all they will travel the same current. If one element disconnects all are without power. If one element is disconnected everyone is energized.
parallel circuit - All elements are connected to the same deos points.
In these circuits all items are subject to the same voltage and each runs a different current intensity. If you disconnect one, the other suguen working.
mixed circuits - are a mix of serial and parallel.