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Related Concept Videos

Galvanometer01:24

Galvanometer

Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of  two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform magnetic...
Induction01:16

Induction

An emf is induced when the magnetic field in a coil is changed by pushing a bar magnet into or out of the coil. emfs of opposite signs are produced by motion in opposite directions, and the directions of emfs are also reversed by reversing poles. The same results are produced if the coil is moved rather than the magnet—it is the relative motion that is important. The faster the motion, the greater the emf. Additionally, there is no emf when the magnet is stationary relative to the coil.
A...
Self-Inductance01:24

Self-Inductance

Mutual inductance arises when a current in one circuit produces a changing magnetic field that induces an emf in another circuit. On the other hand, self-inductance arises when the current passing through the circuit changes, creating a changing magnetic flux, resulting in inductance in the same circuit.
Consider a circuit connected to an AC source. As the current varies with time, the magnetic flux through the circuit correspondingly changes. Faraday's law tells us that an emf would therefore...
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.
Ammeter01:11

Ammeter

An ammeter is a current measuring instrument. In the circuit, it is represented by the symbol A. The ammeter is placed in series with the device or component to measure the current. A series connection is used because objects in series have the same current passing through them. If a circuit has multiple resistors and the current needs to be measured in each resistor, the number of ammeters required depends on whether the circuit is in series or parallel.
When an ammeter is used to measure the...

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Related Experiment Video

Updated: May 29, 2026

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

The gauge including magnetically induced current method.

Heike Fliegl1, Stefan Taubert, Olli Lehtonen

  • 1Department of Chemistry, Laboratory for Instruction in Swedish, University of Helsinki, A. I. Virtanens Plats 1, P. O. Box 50, FI-00014 Helsinki, Finland. Heike.Fliegl@helsinki.fi

Physical Chemistry Chemical Physics : PCCP
|September 13, 2011
PubMed
Summary
This summary is machine-generated.

The gauge including magnetically induced current method (GIMIC) reveals electron delocalization and aromaticity in diverse molecules. This computational tool also estimates hydrogen-bond strengths and explores molecular conductivity.

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Area of Science:

  • Computational Chemistry
  • Quantum Chemistry
  • Molecular Modeling

Background:

  • Understanding electron delocalization and aromaticity is crucial in chemistry.
  • Existing methods may require system fragmentation or lack detailed current pathway information.

Purpose of the Study:

  • To provide an overview of the applications of the Gauge Including magnetically induced current method (GIMIC).
  • To highlight GIMIC's utility in studying electronic properties and molecular interactions.

Main Methods:

  • The Gauge Including magnetically induced current (GIMIC) method is used to calculate magnetically induced current densities.
  • Application across various molecular systems including hydrocarbons, nanorings, and inorganic species.

Main Results:

  • GIMIC provides detailed insights into electron delocalization, aromaticity, and current pathways.
  • The method successfully analyzes complex, twisted, and open-shell systems.
  • GIMIC shows potential for estimating hydrogen-bond strengths and investigating molecular conductivity.

Conclusions:

  • GIMIC is a versatile computational tool for characterizing electronic properties in a wide range of molecules.
  • The method offers a non-fragmenting approach to assess intermolecular interactions and electronic transport.