19,879
edits
Changes
no edit summary
: '''LEDs''' have a low [[Electrical Resistance|resistance]] in one direction and [[emit]] [[light]] but a very high [[Electrical Resistance|resistance]] in the reverse direction and do not [[emit]] [[light]].
: '''LEDs''' can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]].
===IV Graph===
{| class="wikitable"
|[[File:IVGraphDiode.png|center|400px]]
|}
====Description====
The [[IV Graph]] for an '''LED''' shows that:
*For a positive [[Potential Difference|potential difference]] the [[Electrical Current|current]] increases rapidly with an increase in [[Potential Difference|potential difference]]
*For a negative [[Potential Difference|potential difference]] the [[Electrical Current|current]] remains negligible and does not increase as the [[Potential Difference|potential difference]] becomes larger.
====Explanation====
: The [[Electrical Resistance|resistance]] of an '''LED''' is very low for [[Electrical Current|current]] in the forward direction and very high in the back direction.