Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Relative vs. Absolute Voltage

Electric circuits and the voltage at any point

Sponsored Links

relative and absolute voltage

Absolute Voltage

If voltage at point A is quoted with reference to the earth point - the absolute potential - then the voltage is written UA.

Relative Voltage

If voltage at point A is quoted with reference to point B - then the voltage is written UAB.

Example - Relative and Absolute Voltage

The total resistance in the series circuit above can be calculated

R = (33 ohm) + (47 ohm) + (33 ohm)

   = 113 ohm

The current in the circuit can be calculated

I = (12 volts) / (113 ohm)

  = 0.11 ampere

The relative voltage between point A and BVAB - can be calculated

UAB = (33 ohm) (0.11 ampere)

      = 3.6 volts

The absolute voltage in point A relative to earth is

UA = 12 V

The absolute voltage in point B relative to earth is

UB = UA - UAB

    = (12 volt) - (3.6 volt)

    = 8.4 volt

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: relative absolute voltage electric circuit earth point potential
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Citation

This page can be cited as

  • Engineering ToolBox, (2016). Relative vs. Absolute Voltage. [online] Available at: https://www.engineeringtoolbox.com/relative-absolute-voltage-d_1922.html [Accessed Day Mo. Year].

Modify access date.

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

11 19

Sponsored Links
.