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Related Concept Videos

Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Circuit Terminology01:14

Circuit Terminology

An electrical network is a system composed of interconnected elements, such as resistors, capacitors, inductors, and voltage or current sources. Unlike a circuit, an electrical network does not necessarily form a closed path. In other words, while all circuits can be considered networks due to their interconnected nature, not every network qualifies as a circuit.
A circuit, on the other hand, is also an interconnected system of electrical elements but must contain one or more closed paths.
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.
Toroids01:27

Toroids

A toroid is a closely wound donut-shaped coil constructed using a single conducting wire. In general, it is assumed that a toriod consists of multiple circular loops perpendicular to its axis.
When connected to a supply, the magnetic field generated in the toroid has field lines circular and concentric to its axis. Conventionally, the direction of this magnetic field is expressed using the right-hand rule. If the fingers of the right hand curl in the current direction, the thumb points in the...
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
Feedback Loops01:01

Feedback Loops

In most cases, excessive hormone production is prevented by negative feedback—a loop that starts with a stimulus inducing the release of a particular substance, like a hormone, to maintain a certain level before triggering a signal that results in a decrease in further release of the hormone.

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Related Experiment Video

Updated: May 17, 2026

Catheterization of Intestinal Loops in Ruminants
17:15

Catheterization of Intestinal Loops in Ruminants

Published on: June 11, 2009

What's in a loop?

Stephan M Feller1, Marc Lewitzky

  • 1Biological Systems Architecture Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS, UK. stephan.feller@imm.ox.ac.uk.

Cell Communication and Signaling : CCS
|November 1, 2012
PubMed
Summary

Large loop structures are found in both DNA and proteins, enabling complex assembly and signal processing. Studying these loops offers insights into cellular signaling and synthetic biology.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Structural Biology

Background:

  • DNA and proteins are fundamental biomolecules with distinct properties.
  • A shared architectural feature, large loop structures, facilitates multi-protein complex assembly.
  • These loops are crucial for effective signal processing within cells.

Discussion:

  • Loops in proteins are often found in intrinsically disordered regions.
  • Investigating these loops, their binding partners, and inter-loop interactions is key.
  • Understanding loop structures provides insights into cellular information processing.

Key Insights:

  • Loop structures are a common feature in both DNA and proteins, despite their differences.
  • These loops play a vital role in forming multi-protein complexes.

More Related Videos

Studying DNA Looping by Single-Molecule FRET
11:27

Studying DNA Looping by Single-Molecule FRET

Published on: June 28, 2014

Related Experiment Videos

Last Updated: May 17, 2026

Catheterization of Intestinal Loops in Ruminants
17:15

Catheterization of Intestinal Loops in Ruminants

Published on: June 11, 2009

Studying DNA Looping by Single-Molecule FRET
11:27

Studying DNA Looping by Single-Molecule FRET

Published on: June 28, 2014

  • Functional classification of loop structures can enhance our understanding of biological systems.

    • Outlook:

    • Studying protein loops and their interactions will illuminate cellular signaling network architectures.
    • This research is expected to yield critical information for synthetic biologists and bioengineers.
    • Further exploration of loop structures can advance the field of systems biology.