La ley de Ohm establece que la intensidad eléctrica que circula entre dos puntos de un circuito eléctrico es directamente proporcional a la tensión eléctrica entre dichos puntos, existiendo una constante de proporcionalidad entre estas dos magnitudes. Dicha constante de proporcionalidad es la conductancia eléctrica, que es inversa a la resistencia eléctrica.
La ecuación matemática que describe esta relación es:
donde, I es la corriente que pasa a través del objeto en amperios, V es la diferencia de potencial de las terminales del objeto en voltios, G es la conductancia en siemens y R es la resistencia enhomios (Ω). Específicamente, la ley de Ohm dice que la R en esta relación es constante, independientemente de la corriente.
Esta ley tiene el nombre del físico alemán Gerog ohm, que en un tratado publicado en 1827, halló valores de tensión y corriente que pasaba a través de unos circuitos eléctricos simples que contenían una gran cantidad de cables. Él presentó una ecuación un poco más compleja que la mencionada anteriormente para explicar sus resultados experimentales. La ecuación de arriba es la forma moderna de la ley de Ohm.
Esta ley se cumple para circuitos y tramos de circuitos pasivos que, o bien no tienen cargas inductivas ni capasitivas (únicamente tiene cargas resistivas), o bien han alcanzado un régimen permante(véase también «circuito LCL» y régimen transitorio (electrónica»). También debe tenerse en cuenta que el valor de la resistencia de un conductor puede ser influido por la temperatura.
Ohm's law states that the electrical current flowing between two points in an electrical circuit is directly proportional to the voltage between these points, there being a constantof proportionality between these two magnitudes. This proportionality constant is the electrical conductance, which is opposite to the electrical resistance.
The mathematical equation describing this relationship is:
where I is the current passing through the object in amperes, V is the potential differenceof the terminals of the object in volts, G is the conductance in siemens and R is the resistance enhomios (Ω). Specifically, Ohm's law states that the R in this ratio is constant regardless of the current.
This law is named after the German physicist Georg Ohm, who in a treatise published in 1827, found values of voltage and current passing through a simple electrical circuitscontaining a large number of cables. He presented a slightly more complex equation as mentioned above to explain the experimental results. The above equation is the modern form of Ohm's law.
This law holds for circuits and passive circuit sections that either have no or capasitivasinductive loads (resistive loads only is) or have reached a Permante regime (see also "LCL circuit" and transitional arrangements (e '). should also be noted that the value of the resistance of a conductor can be influenced by temperature.
The mathematical equation describing this relationship is:
where I is the current passing through the object in amperes, V is the potential differenceof the terminals of the object in volts, G is the conductance in siemens and R is the resistance enhomios (Ω). Specifically, Ohm's law states that the R in this ratio is constant regardless of the current.
This law is named after the German physicist Georg Ohm, who in a treatise published in 1827, found values of voltage and current passing through a simple electrical circuitscontaining a large number of cables. He presented a slightly more complex equation as mentioned above to explain the experimental results. The above equation is the modern form of Ohm's law.
This law holds for circuits and passive circuit sections that either have no or capasitivasinductive loads (resistive loads only is) or have reached a Permante regime (see also "LCL circuit" and transitional arrangements (e '). should also be noted that the value of the resistance of a conductor can be influenced by temperature.
minerales, tiene mayor capacidad de refrigeración y permite trabajar en bajas temperaturas.
