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Name: DC Voltmeters and Ammeters
ID: m42360
Language: English (en)
Summary:
  • Explain why a voltmeter must be connected in parallel with the circuit.
  • Draw a diagram showing an ammeter correctly connected in a circuit.
  • Describe how a galvanometer can be used as either a voltmeter or an ammeter.
  • Find the resistance that must be placed in series with a galvanometer to allow it to be used as a voltmeter with a given reading.
  • Explain why measuring the voltage or current in a circuit can never be exact.
Subject: Science and Technology
Keywords: Ammeter, Analog meter, Current sensitivity, Digital meter, Full-scale deflection, Galvanometer, Shunt resistance, Voltmeter
License: Creative Commons Attribution License CC-BY 3.0

Authors: OpenStax College (info@openstaxcollege.org)
Copyright Holders: Rice University (daniel@openstaxcollege.org)
Maintainers: OpenStax College (info@openstaxcollege.org), OSC Physics Maintainer (info@openstaxcollege.org)

Latest version: 1.6 (history)
First publication date: Jan 17, 2012 3:00 pm -0600
Last revision to module: Jul 17, 2012 9:36 am -0500

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Version History

Version: 1.6 Jul 17, 2012 9:36 am -0500 by OSC Physics Maintainer
Changes:
image sizing

Version: 1.5 Jul 5, 2012 9:24 pm -0500 by OSC Physics Maintainer
Changes:
image updates and LO modification

Version: 1.4 Jun 20, 2012 10:22 am -0500 by OSC Physics Maintainer
Changes:
post W&N QA

Version: 1.3 Jun 13, 2012 3:04 pm -0500 by OSC Physics Maintainer
Changes:
Review changes

Version: 1.2 Jun 1, 2012 12:11 pm -0500 by OSC Physics Maintainer
Changes:
initial content publication

Version: 1.1 Jan 20, 2012 5:29 pm -0600 by OSC Physics Maintainer
Changes:
Created module

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