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Related Concept Videos

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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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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Electric Field01:16

Electric Field

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Consider two point charges, each exerting Coulomb force on the other. It is possible to describe the Coulomb interaction via an intermediate step by defining a new physical quantity called the electric field.
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Determining Electric Field From Electric Potential01:12

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The electric field and electric potential are related to each other. If the electric field at various points in the region of interest is known, it can be used to calculate the electric potential difference between any two points. Similarly, if the electric potential is known for various points, then it is possible to calculate the electric field.
In general, regardless of whether the electric field is uniform, it points in the direction of decreasing potential because the force on a positive...
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Finding Electric Potential From Electric Field01:13

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For a system of charges, it is easy to calculate the system's potential because potential is a scalar quantity. However, in some instances where calculating the electric field is more straightforward than finding the potential, the electric field is used to calculate the system's potential. For a positive charge, the electric field is radially outward, and the potential is positive at any finite distance from the positive charge. In such an electric field, the motion away from the...
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Electric Field Inside a Conductor01:20

Electric Field Inside a Conductor

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When a conductor is placed in an external electric field, the free charges in the conductor redistribute and very quickly reach electrostatic equilibrium. The resulting charge distribution and its electric field have many interesting properties, which can be investigated with the help of Gauss's law.
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Related Experiment Video

Updated: Jan 24, 2026

Electric-Field-Induced Neural Precursor Cell Differentiation in Microfluidic Devices
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Morphological Changes Induced By Extremely Low-Frequency Electric Fields.

Mahdi Imani1, Sepide Kazemi2, Mehrdad Saviz1

  • 1Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran.

Bioelectromagnetics
|June 4, 2019
PubMed
Summary

Electric fields cause non-thermal morphological changes in avian erythrocytes, such as rounding and transparency. These effects are frequency-dependent and influenced by temperature, suggesting complex bioelectromagnetic interactions.

Keywords:
cell morphologydedifferentiationelectric fieldextremely low frequencynon-thermal effects

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Area of Science:

  • Bioelectromagnetics
  • Cell Biology
  • Biophysics

Background:

  • Avian erythrocytes possess nuclei, distinguishing them from mammalian red blood cells.
  • Electric fields are known to influence biological cells, but mechanisms require further elucidation.
  • Understanding cell response to electric fields is crucial for bioelectronic applications.

Purpose of the Study:

  • To investigate the morphological alterations in avian erythrocytes induced by electric fields.
  • To determine if these effects are thermal or non-thermal.
  • To explore the underlying mechanisms, including the dedifferentiation hypothesis.

Main Methods:

  • Detailed morphological studies using advanced imaging and image analysis techniques.
  • Frequency-dependent analysis of electric field effects on erythrocytes.
  • Investigation of temperature influence on cellular response.
  • Fluorescence spectroscopy for hemoglobin analysis.
  • Flow cytometry for marker expression and calcium staining in various cell types.

Main Results:

  • Observed morphological changes in avian erythrocytes include cell rounding and increased cytoplasm transparency.
  • The observed effects were confirmed to be non-thermal.
  • The degree of morphological change was found to be frequency-dependent.
  • Higher temperatures correlated with a higher conversion rate of morphological changes.
  • Preliminary tests on human cells provided comparative data for dedifferentiation hypothesis.

Conclusions:

  • Electric fields induce significant, non-thermal morphological changes in avian erythrocytes.
  • The observed effects are modulated by electric field frequency and temperature.
  • Further research is needed to fully elucidate the dedifferentiation mechanisms and broader implications.