Jove
Visualize
Contáctanos

Videos de Conceptos Relacionados

Coulomb's Law01:30

Coulomb's Law

Experiments with electric charges have shown that if two objects each have an electric charge, they exert an electric force on each other. The magnitude of the force is linearly proportional to the net charge on each object and inversely proportional to the square of the distance between them. The direction of the force vector is along the imaginary line joining the two objects and is dictated by the signs of the charges involved.
Newton's third law applies to the Coulomb force — the force on...
Magnetic Force On A Current-Carrying Conductor01:25

Magnetic Force On A Current-Carrying Conductor

Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a conductor carrying a current creates a magnetic field around it.
Consider a compass placed near a current-carrying wire. The wire experiences a force that aligns the needle of the compass tangentially around the wire. Thus, the current-carrying wire produces concentric circular loops of magnetic field. The magnetic field generated by a wire can be...
Magnetic Force On Current-Carrying Wires: Example01:22

Magnetic Force On Current-Carrying Wires: Example

In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force acts on the wire as well. Consider a pair of flexible leads holding a wire that is 40 cm long and 10 g in weight in a horizontal position. The wire is placed in a constant magnetic field of 0.40 T, as shown in Figure 1(a). Determine the magnitude and direction of the current flowing in the wire needed to remove the tension in the supporting leads.
Magnetic Field Due To A Thin Straight Wire01:27

Magnetic Field Due To A Thin Straight Wire

Consider an infinitely long straight wire carrying a current I. The magnetic field at point P at a distance a from the origin can be calculated using the Biot-Savart law.
Magnetic Force01:18

Magnetic Force

In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...
Magnetic Field Due to Two Straight Wires01:18

Magnetic Field Due to Two Straight Wires

Consider two parallel straight wires carrying a current of 10 A and 20 A in the same direction and separated by a distance of 20 cm. Calculate the magnetic field at a point "P2", midway between the wires. Also, evaluate the magnetic field when the direction of the current is reversed in the second wire.

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Association of Anxiety with Discrepancies Between Unattended and Attended Office Blood Pressure Measurement.

American journal of hypertension·2025
Same author

[Cataract surgery training in France: Analysis of the results of the European Board of Ophthalmology survey in the French cohort].

Journal francais d'ophtalmologie·2024
Same author

Training in cataract surgery in Spain: analysis of the results of a survey of the European Board of Ophthalmology in a Spanish cohort.

Archivos de la Sociedad Espanola de Oftalmologia·2024
Same author

Influence of energy drinks on hemodynamic parameters in young healthy adults - Randomized double-blind placebo controlled cross-over study: <b>PS020</b>.

Porto biomedical journal·2020
Same author

Prophylactic central neck dissection for papillary thyroid cancer.

The British journal of surgery·2012
Same author

Dynamic nuclear polarization in double quantum dots.

Physical review letters·2010
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Video Experimental Relacionado

Updated: Jul 26, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

El arrastramiento de Coulomb negativo en un alambre unidimensional.

M Yamamoto1, M Stopa, Y Tokura

  • 1Department of Applied Physics, University of Tokyo, Bunkyoku, Tokyo 113-8656, Japan.

Science (New York, N.Y.)
|July 15, 2006
PubMed
Resumen

Observamos un arrastre de Coulomb negativo en cables cuánticos donde los electrones fluían en direcciones opuestas. Este fenómeno, que ocurre bajo fuertes condiciones de correlación, sugiere un nuevo modelo que involucra el cristal de Wigner y los estados similares a las partículas.

Más Videos Relacionados

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
09:14

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Published on: December 7, 2017

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Videos de Experimentos Relacionados

Last Updated: Jul 26, 2026

Characterization of Thermal Transport in One-dimensional Solid Materials
05:20

Characterization of Thermal Transport in One-dimensional Solid Materials

Published on: January 26, 2014

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices
09:14

Flow-assisted Dielectrophoresis: A Low Cost Method for the Fabrication of High Performance Solution-processable Nanowire Devices

Published on: December 7, 2017

Finite Element Modelling of a Cellular Electric Microenvironment
08:23

Finite Element Modelling of a Cellular Electric Microenvironment

Published on: May 18, 2021

Área de la Ciencia:

  • Física de la materia condensada Física de la materia condensada
  • La mecánica cuántica es la mecánica cuántica.
  • Física Mesoscópica de la Física

Sus antecedentes:

  • La resistencia de Coulomb mide la interacción entre los portadores de carga en conductores separados.
  • Las teorías estándar explican el arrastre basado en la transferencia de momento, típicamente prediciendo el arrastre positivo.
  • La observación de un arrastre de Coulomb negativo indica un desglose de los modelos convencionales.

Objetivo del estudio:

  • Para investigar el fenómeno de arrastre de Coulomb negativo en cables cuánticos acoplados en paralelo.
  • Para explorar las condiciones bajo las cuales se produce un arrastre de Coulomb negativo.
  • Proponer un nuevo modelo teórico que explique esta observación no convencional.

Principales métodos:

  • Observación experimental del flujo de electrones en direcciones opuestas dentro de cables cuánticos paralelos.
  • Condiciones que varían sistemáticamente, como la densidad de electrones, el campo magnético y la temperatura.
  • Modelado teórico que incorpora estados correlacionados de electrones.

Principales resultados:

  • El arrastre de Coulomb negativo se observó exclusivamente en condiciones de fuerte correlación de electrones (baja densidad, alto campo magnético, baja temperatura).
  • El efecto observado no pudo ser explicado por las teorías estándar de transferencia de momento.
  • Se propuso un nuevo modelo, considerando la formación de cristales de Wigner en un cable y un estado parecido a una partícula en el otro.

Conclusiones:

  • La fuerte correlación de electrones es crucial para observar la arrastre de Coulomb negativo en este sistema.
  • El modelo propuesto proporciona una explicación potencial para la resistencia de Coulomb negativa observada.
  • Este hallazgo abre nuevas vías para la comprensión de las interacciones de los electrones en sistemas cuánticos.