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: [[Diode]]s have a low [[Electrical Resistance|resistance]] in one direction but a very high [[Electrical Resistance|resistance]] in the reverse direction.
: [[Diode]]s can be used to change an [[Alternating Current|alternating current]] into a [[Direct Current|direct current]].
{| class="wikitable"
|[[File:IVGraphDiode.png|center|400px]]
|}
====Description====
The '''IV graph''' for a [[diode]] 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.