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====Explanation====
: The [[Electrical Resistance|resistance]] of a [[diode]] is very low for [[Electrical Current|current]] in the forward direction and very high in the back direction.
====Obtaining the IV Graph====
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|[[File:DiodeIVGraphCircuit.png|center|300px]]
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#Connect an [[ammeter]] in [[Series Circuit|series]] with the [[diode]] to measure [[Electrical Current|current]] through the [[diode]].
#Connect a [[voltmeter]] in [[Parallel Circuit|parallel]] with the [[diode]] to measure the [[Potential Difference|potential difference]] across it.
#Use a [[Variable Resistor|variable resistor]] in [[Series Circuit|series]] with the [[diode]] to vary the [[Potential Difference|potential difference]] across the [[diode]].
#Start with a [[Potential Difference|potential difference]] of zero and increase the [[Potential Difference|potential difference]] by an interval of 0.2V up to 2V.
#Recording the reading on the [[voltmeter]] and [[ammeter]].
#Reverse the connections on the [[battery]] and repeat steps 4 and 5 to find the I-V relationship for negative [[Potential Difference|potential difference]] and [[Electrical Current|current]].
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