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関連する概念動画

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.

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関連する実験動画

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

通常の金属リングの恒常電流は,

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
まとめ
この要約は機械生成です。

研究者は金属のリングに恒定電流を測定し,量子力学の予測を確認した. この突破は実験的な課題を克服し,これらの基本的な量子現象に関する新しい研究を可能にします.

さらに関連する動画

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

関連する実験動画

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

科学分野:

  • 凝縮物質物理学 凝縮物質物理学
  • 量子力学は,量子力学という
  • メソスコープ物理学のメソスコープ物理学

背景:

  • 量子力学は,平衡状態にある抵抗性金属の環の中で,消耗性のない恒常電流を予測する.
  • これらの電流の研究は,小さな信号と環境の感受性のために困難です.
  • 恒定電流の基本的な性質は,理論的および実験的議論の対象であり続けています.

研究 の 目的:

  • 金属のリングにおける恒定電流の検出と測定のための新しい技術を開発する.
  • 恒定電流に対する温度,リングサイズ,磁場の影響を調査する.
  • 定常電流の理論モデルを実験的に検証する.

主な方法:

  • 永続電流の感度検知のための新しい実験技術の開発.
  • 個々の金属リングやリングの配列における恒常電流の測定.
  • 非相互作用電子モデルに基づく理論的計算と実験データの比較.

主要な成果:

  • 様々な条件で金属リングの恒定電流の測定に成功しました.
  • 環境騒音に強い技術と,小さな信号を検出できる技術の実証.
  • 実験結果は,相互作用しない電子の理論的予測と非常に一致しています.

結論:

  • 開発された技術は,恒定電流を研究するための信頼できる方法を提供します.
  • 実験的発見は,持続電流における相互作用しない電子の理論的モデルを支持する.
  • この研究は,メソスコピック系における基本的な量子現象の理解を前進させる.