Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

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.
Eddy Currents01:25

Eddy Currents

Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
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 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 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.

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Probing non-ergodicity and symmetry via direct measurement of coherent scattering in a shaken rotor.

Nature communications·2026
Same author

Quantum twisting microscopy of phonons in twisted bilayer graphene.

Nature·2025
Same author

Hamiltonian Ratchet for Matter-Wave Transport.

Physical review letters·2023
Same author

Superfluid Helium Drops Levitated in High Vacuum.

Physical review letters·2023
Same author

Measuring High-Order Phonon Correlations in an Optomechanical Resonator.

Physical review letters·2022
Same author

Phase-Slip Statistics of a Single Isolated Flux-Biased Superconducting Ring.

Physical review letters·2020
Same journal

Erratum for the Research Article "Detecting supramolecular organic nanoparticles during heat wave".

Science (New York, N.Y.)·2026
Same journal

Local signals, systemic decline.

Science (New York, N.Y.)·2026
Same journal

The mechanics of liver regeneration.

Science (New York, N.Y.)·2026
Same journal

Computing in a memory with physics.

Science (New York, N.Y.)·2026
Same journal

Retraction.

Science (New York, N.Y.)·2026
Same journal

Making time.

Science (New York, N.Y.)·2026
查看所有相关文章

相关实验视频

Updated: Jun 19, 2026

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

Comparative Study of Simulation of Temperature Rise in Ring Main Unit

Published on: July 5, 2024

常规金属环中的恒流.

A C Bleszynski-Jayich1, W E Shanks, B Peaudecerf

  • 1Department of Physics, Yale University, New Haven, CT 06520, USA.

Science (New York, N.Y.)
|October 10, 2009
PubMed
概括
此摘要是机器生成的。

研究人员测量了金属环中的持久电流,证实了量子力学的预测. 这一突破克服了实验挑战,使这些基本量子现象的新研究成为可能.

更多相关视频

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
06:17

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors

Published on: January 16, 2020

相关实验视频

Last Updated: Jun 19, 2026

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

Comparative Study of Simulation of Temperature Rise in Ring Main Unit

Published on: July 5, 2024

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array
09:55

Preparation of Janus Particles and Alternating Current Electrokinetic Measurements with a Rapidly Fabricated Indium Tin Oxide Electrode Array

Published on: June 23, 2017

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
06:17

Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors

Published on: January 16, 2020

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 量子力学就是量子力学.
  • 介面镜物理学的物理

背景情况:

  • 量子力学预测在平衡状态下的电阻金属环中没有散射的持久电流.
  • 研究这些电流是具有挑战性的,因为信号很小,环境敏感.
  • 恒流的基本特性仍然是理论和实验辩论的主题.

研究的目的:

  • 开发一种用于检测和测量金属环中的恒流的新技术.
  • 为了研究温度,环形大小和磁场对持久电流的影响.
  • 实验验证持久电流的理论模型.

主要方法:

  • 开发一种新的实验技术,用于对持久电流进行敏感检测.
  • 在单个金属环和环阵列中测量持久电流.
  • 实验数据与基于非相互作用电子模型的理论计算进行比较.

主要成果:

  • 在各种条件下成功测量金属环中的恒流.
  • 展示了一种对环境噪声强大的技术,能够检测小信号.
  • 实验结果与对非相互作用电子的理论预测有很好的一致性.

结论:

  • 开发的技术为研究持久电流提供了一种可靠的方法.
  • 实验发现支持持久电流中非相互作用电子的理论模型.
  • 这项工作有助于我们更好地理解中观系统中的基本量子现象.