(REFRIGERATOR ELECTRIC DIAGRAM OF A DUPLEX)
DIAGRAMA ELECTRICO DE UN REFRIGERADOR SENCILLO
(REFRIGERATOR ELECTRIC DIAGRAM OF A SIMPLE)
Ley Ohm:
George Simón Ohm (1787–1854) físico y profesor alemán, utilizo en sus experimentos instrumentos de medición bastante confiables y observo que si aumenta la diferencia de potencial en un circuito, mayor es la intensidad de la corriente eléctrica; también comprobó que al incrementar la resistencia del conductor, disminuye la intensidad de la corriente eléctrica.
Con base en sus observaciones en 1827 enunció la siguiente ley que lleva su nombre: La intensidad de la corriente eléctrica que pasa por un conductor en un circuito es directamente proporcional a la diferencia de potencial aplicado a sus extremos e inversamente proporcional a la resistencia del conductor.
Matemáticamente esta ley se expresa de la siguiente manera:
I=V/R por lo tanto V=IR
donde: V: es la diferencia de potencial aplicado a los extremos del conductor (en volts V)
R: es la resistencia del conductor en Ohms
I:es la intensidad de la corriente que circula por el conductor (en amperes A)
Al despejar la resistencia de la expresión matemática de la ley de Ohm tenemos que: R=V/I
Con base en la ley de Ohm se define a la unidad de resistencia eléctrica de la siguiente manera: la resistencia de un conductor es de 1 ohm si existe una corriente de un ampere cuando se mantiene una diferencia de potencial de un Volt a través de la resistencia:
R(en homs)= V (en volts)/I(en amperes) es decir 1ohm=V/A
Cabe señalar que la ley de hom presenta algunas limitaciones como son:
1.- Se puede aplicar a los metales pero no al carbón o a los materiales utilizados en los transistores.
2.- Al utilizarse esta ley debe recordarse que la resistencia cambia con la temperatura, pues todos los materiales se calientan por el paso de corriente.
3.- Algunas aleaciones conducen mejor las cargas en una dirección que otra.
Ohm law:
George Simon Ohm (1787-1854) German physicist and professor, used in their experiments fairly reliable measurement instruments and note that if you increase the potential difference in a circuit, the greater the intensity of electric current, also found that increasing the lead resistance, decreases the intensity of electric current.
Based on their observations in 1827 enunciated the following law that bears his name:The intensity of the electric current passing through a conductor in a circuit is directly proportional to the potential difference applied to its ends and inversely proportional to the resistance of the conductor .
Mathematically this law is expressed as follows:
I = V / R therefore V = IR
where: V: is the potential difference applied to the conductor ends (in volts V)
R: is the resistance of the conductor in Ohms
I: is the current intensity flowing in the conductor (in amperes A)
Solving the strength of the mathematical expression of Ohm's law we have: R = V / I
Based on Ohm's Law defines the unit of electrical resistance as follows: the resistance of a conductor is 1 ohm if a current of one ampere when maintaining a potential difference of one Volt across the resistance:
R (homs) = V (volts) / I (in amperes) is 1ohm = V / A
It should be noted that the law of man has some limitations such as:
1. - Can be applied to metals but no coal or materials used in transistors.
2. - When used in this law should be remembered that the resistance changes with temperature, as all materials are heated by the passage of current.
3. - Some alloys best conducted loads in one direction than another.
George Simon Ohm (1787-1854) German physicist and professor, used in their experiments fairly reliable measurement instruments and note that if you increase the potential difference in a circuit, the greater the intensity of electric current, also found that increasing the lead resistance, decreases the intensity of electric current.
Based on their observations in 1827 enunciated the following law that bears his name:The intensity of the electric current passing through a conductor in a circuit is directly proportional to the potential difference applied to its ends and inversely proportional to the resistance of the conductor .
Mathematically this law is expressed as follows:
I = V / R therefore V = IR
where: V: is the potential difference applied to the conductor ends (in volts V)
R: is the resistance of the conductor in Ohms
I: is the current intensity flowing in the conductor (in amperes A)
Solving the strength of the mathematical expression of Ohm's law we have: R = V / I
Based on Ohm's Law defines the unit of electrical resistance as follows: the resistance of a conductor is 1 ohm if a current of one ampere when maintaining a potential difference of one Volt across the resistance:
R (homs) = V (volts) / I (in amperes) is 1ohm = V / A
It should be noted that the law of man has some limitations such as:
1. - Can be applied to metals but no coal or materials used in transistors.
2. - When used in this law should be remembered that the resistance changes with temperature, as all materials are heated by the passage of current.
3. - Some alloys best conducted loads in one direction than another.
CIRCUITO EN SERIE
(SERIES CIRCUIT)
CIRCUITO EN PARALELO
(PARALLEL CIRCUIT)
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