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Related Concept Videos

Energy In A Magnetic Field01:24

Energy In A Magnetic Field

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If a magnetic field is sustained, there must be a current in a closed circuit or loop, implying some energy has been spent in creating the field. If this energy is not dissipated via the circuit's resistance, it is stored in the field.
Take an ideal inductor with zero resistance. Although it's practically impossible, assume that the coil's resistance is so small that it is practically negligible. The loss of the field's energy to dissipate thermal energy (or heat) is thus...
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Electromagnetic Fields01:30

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Electric fields generated by static charges, often referred to as electrostatic fields, are characteristically different from electric fields created by time-varying magnetic fields. While the former is a conservative field, implying that no net work is done on a test charge if it goes around in a complete loop in the field, the latter is, by definition, not a conservative field; net work is done, and it is proportional to the rate of change of magnetic flux.
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Magnetic Field due to Moving Charges01:23

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A stationary charge creates and interacts with the electric field, while a moving charge creates a magnetic field.
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
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Induced Electric Fields: Applications01:27

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An important distinction exists between the electric field induced by a changing magnetic field and the electrostatic field produced by a fixed charge distribution. Specifically, the induced electric field is nonconservative because it does not work in moving a charge over a closed path. In contrast, the electrostatic field is conservative and does no net work over a closed path. Hence, electric potential can be associated with the electrostatic field but not the induced field. The following...
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Magnetic flux depends on three factors: the strength of the magnetic field, the area through which the field lines pass, and the field's orientation with respect to the surface area. If any of these quantities vary, a corresponding variation in magnetic flux occurs. If the area through which the magnetic field lines are passing changes, then the magnetic flux also changes. This change in the area can be of two types: the flux through the rectangular loop increases as it moves into the...
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Induced Electric Fields01:23

Induced Electric Fields

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The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? We know that it’s neither a battery nor a magnetic field, as a battery does not have to be present in a circuit where current is induced, and magnetic fields never do any work on moving charges. The source of the work is in fact an electric field that is induced in the wires. For example, if a stationary conductor is placed in a...
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Related Experiment Video

Updated: Sep 25, 2025

Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
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Electrochemistry in Magnetic Fields.

Songzhu Luo1, Kamal Elouarzaki1,2, Zhichuan J Xu1,2,3

  • 1School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.

Angewandte Chemie (International Ed. in English)
|April 25, 2022
PubMed
Summary
This summary is machine-generated.

Magnetoelectrochemistry uses magnetic fields to control challenging electrochemical reactions. This review explores recent advances and remaining challenges in this interdisciplinary field for technological applications.

Keywords:
ElectrocatalysisElectrochemistryMagnetic FieldMagnetic HyperthermiaMagnetohydrodynamics

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Area of Science:

  • Electrochemistry
  • Magnetism
  • Hydrodynamics

Background:

  • Fundamental understanding of electrochemistry is key to solving technological challenges.
  • Magnetoelectrochemistry offers unique advantages for controlling complex electrochemical reactions.
  • This field is interdisciplinary, integrating electrochemistry, hydrodynamics, and magnetism.

Purpose of the Study:

  • To survey recent advances in magnetoelectrochemistry.
  • To organize findings based on magnetic field effects on electrochemical principles.
  • To highlight how magnetic fields influence observed electrochemical results.

Main Methods:

  • Review of recent literature on magnetoelectrochemistry.
  • Analysis of magnetic field effects on electrochemical systems.
  • Focus on the interplay between magnetism, hydrodynamics, and electrochemistry.

Main Results:

  • Magnetic fields can be strategically used to control and understand electrochemical reactions.
  • Observed experimental outcomes in magnetoelectrochemistry can be unexpected.
  • The review categorizes advances by the forces generated by magnetic fields.

Conclusions:

  • Magnetoelectrochemistry presents a promising avenue for electrochemical applications.
  • Further research is needed to overcome challenges and establish robust applications.
  • Continued interdisciplinary collaboration is essential for advancing the field.