OpenStax CNX

You are here: Home » Content » Null Measurements

About: Null Measurements

Module by: OpenStax College. E-mail the author

View the content: Null Measurements


Name: Null Measurements
ID: m42362
Language: English (en)
  • Explain why a null measurement device is more accurate than a standard voltmeter or ammeter.
  • Demonstrate how a Wheatstone bridge can be used to accurately calculate the resistance in a circuit.
Subject: Science and Technology
Keywords: Bridge device, Null measurements, Ohmmeter, Potentiometer, Wheatstone bridge
License: Creative Commons Attribution License CC-BY 3.0

Authors: OpenStax College (
Copyright Holders: Rice University (
Maintainers: OSC Physics Maintainer (, OpenStax College (

Latest version: 1.2 (history)
First publication date: Jan 17, 2012 3:00 pm +0000
Last revision to module: Jun 1, 2012 12:11 pm +0000


PDF: m42362_1.2.pdf PDF file, for viewing content offline and printing. Learn more.
XML: m42362_1.2.cnxml XML that defines the structure and contents of the module, minus any included media files. Can be reimported in the editing interface. Learn more.

Version History

Version: 1.2 Jun 1, 2012 12:11 pm +0000 by OSC Physics Maintainer
initial content publication

Version: 1.1 Jan 20, 2012 5:31 pm +0000 by OSC Physics Maintainer
Created module

How to Reuse and Attribute This Content

If you derive a copy of this content using a OpenStax-CNX account and publish your version, proper attribution of the original work will be automatically done for you.

If you reuse this work elsewhere, in order to comply with the attribution requirements of the license (CC-BY 3.0), you must include

  • the authors' names: OpenStax College
  • the title of the work: Null Measurements
  • the OpenStax-CNX URL where the work can be found:

See the citation section below for examples you can copy.

How to Cite and Attribute This Content

The following citation styles comply with the attribution requirements for the license (CC-BY 3.0) of this work:

American Chemical Society (ACS) Style Guide:

OpenStax College. Null Measurements, OpenStax-CNX Web site., Jun 1, 2012.

American Medical Assocation (AMA) Manual of Style:

OpenStax College. Null Measurements [OpenStax-CNX Web site]. June 1, 2012. Available at:

American Psychological Assocation (APA) Publication Manual:

OpenStax College. (2012, June 1). Null Measurements. Retrieved from the OpenStax-CNX Web site:

Chicago Manual of Style (Bibliography):

OpenStax College. "Null Measurements." OpenStax-CNX. June 1, 2012.

Chicago Manual of Style (Note):

OpenStax College, "Null Measurements," OpenStax-CNX, June 1, 2012,

Chicago Manual of Style (Reference, in Author-Date style):

OpenStax College. 2012. Null Measurements. OpenStax-CNX, June 1, 2012.

Modern Languages Association (MLA) Style Manual:

OpenStax College. Null Measurements. OpenStax-CNX. 1 June 2012 <>.