As the blog will try to explain how to analyze an electrical circuit, I think we must start by explaining what an electrical circuit is and each one of the part that forms of it.

First an image of an electric circuit and the parts that are on it:

Now I will explain each part of a circuit:

**-Voltage(V):**When a load is moved through the circuit elements, energy can be transfered. The voltage associated with a circuit element is the energy transferred per unit of charge flowing through an element. Voltage units are Volts(V) which is equivalent to Joules per Coulomb(J/C). If we analyze the electrical circuit from above, have a voltage source, which is providing the energy required for each of the elements of the circuit. For the analysis of electrical circuits on DC, a DC voltage source of independent type can be represented in three ways:

**-Intensity or current(I):**The electric current is the time it takes an electrical charge to flow through a conductor or a circuit element. The units are Amperes(A) which is equivalent to Coulomb per second(C/s). The current in an electric circuit is represented by a I1 or i1 and its direction will depend on the circuit elements.

**-Neutro(0):**In order to analyze an electrical circuit we must have one end of the circuit in the physical earth, where the voltage is zero(no value).

**-Resistance(R):**An electrical resistance is the opposition of a body to the flow of the electrical current. The resistance is measured in Ohms and in an electrical circuit is represented as:

These are the most important parts of a circuit.

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