Fayl:A moving coil galvanometer. Wellcome M0016397.jpg

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A moving coil galvanometer.
Title
A moving coil galvanometer.
Taʼrif
English: An early D'Arsonval galvanometer, which became the design used in modern moving coil ammeters. It consists of a small coil of fine wire suspended between the poles of a horseshoe magnet by a torsion fiber. When an electric current passes through the coil it turns to be parallel with the field, twisting the fiber, moving the pointer up the scale. When the torque of the coil balances the torque of the fiber, the pointer stops. From Hooke's law, the torque of the fiber is proportional to the angle of twist, so the angle of the pointer is proportional to the current.
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Wellcome Images
Keywords: Electricity; Electrotherapy

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This file comes from Wellcome Images, a website operated by Wellcome Trust, a global charitable foundation based in the United Kingdom. Refer to Wellcome blog post (archive).
This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing.

References
  • Library reference: Museum No. 116/1957
  • Photo number: M0016397
Source/Photographer

https://wellcomeimages.org/indexplus/obf_images/30/af/06570418c9a34ae5c68c689cd90a.jpg

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joriy23:28, 24-Oktyabr 201423:28, 24-Oktyabr 2014 dagi versiya uchun tasvir3 450 × 3 050 (2,02 MB)=={{int:filedesc}}== {{Artwork |artist = |author = |title = A moving coil galvanometer. |description = A moving coil galvanometer of the type designed by D'Arsonval. <p>Wellcome Images<br> Keywords: Electrici...

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