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Home Q & A Board Science-Related Homework Help Physics
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Smoren Smoren
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11 years ago
How can i know the internal resistance of the diode?
By the code or number or color on it
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wrote...
#1
11 years ago
when u mix it with starch, the color change rapidly to violet
wrote...
#2
11 years ago
identify a diode with a ohm's law circuit.

connect an ammeter in series and voltmeter across diode. if increasing voltage in one direction gives increasing current but increasing voltage in other direction gives no (negligible) current, its a diode. Alternatively use a multimeter.

resistance of diodes are of two types : static resistance and dynamic resistance. From the above experiment, value of V / I gives static resistance. For dynamic resistance, you plot a graph of V vs. I and find the slope.
wrote...
#3
11 years ago
if u hav no ammmeter or anythng else,u can still identify
the side having a band is p side,other side is n
or u can use multimeter if available,by using it in short testing mode,if it beeps,then side which is connected with red terminal of multimeter is p
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