File:Active sign convention.svg
Size of this PNG preview of this SVG file: 376 × 382 pixels. Other resolutions: 236 × 240 pixels | 472 × 480 pixels | 756 × 768 pixels | 1,008 × 1,024 pixels | 2,016 × 2,048 pixels.
Original file (SVG file, nominally 376 × 382 pixels, file size: 13 KB)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
| Description |
English: Diagram illustrating the active sign convention, the opposite of the passive sign convention, the standard convention used to define the direction of power flow in an electrical component. To comply with this convention, the direction of the voltage v and current i variables in an electric component are defined as shown in the diagram, so that conventional current flows from the negative voltage terminal to the positive. With this convention, positive power flow p (big arrow) will represent power flowing out of the device, that is, power produced in the device. So in a passive (load) component, such as a light bulb or appliance, power dissipation p = iv and electrical resistance R = v / i will be negative, while in an active (source) component, such as a battery or electric generator, power dissipation and resistance will be positive. This convention is not normally used in electrical circuits. |
| Date | |
| Source | Own work |
| Author | Chetvorno |
Licensing
I, the copyright holder of this work, hereby publish it under the following license:
 
|
This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. |
| The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
|
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:14, 2 June 2021 | | 376 × 382 (13 KB) | Chetvorno | Put arrowheads on both voltage arrows to prevent ambiguity due to differing conventions in different countries for depicting the polarity of a voltage with an arrow |
| 20:39, 16 June 2013 |  | 376 × 382 (16 KB) | Chetvorno | Removed color | |
| 21:26, 23 October 2012 |  | 376 × 382 (17 KB) | Chetvorno | Changed labels to more commonly used lower case italic to indicate the convention also applies to time varying currents, and changed locations and colors of labels | |
| 21:20, 6 October 2012 |  | 534 × 404 (14 KB) | Chetvorno | User created page with UploadWizard |
File usage
The following pages on the English Wikipedia use this file (pages on other projects are not listed):
Global file usage
The following other wikis use this file:
- Usage on th.wikipedia.org
- Usage on zh.wikipedia.org
