Electronic Devices - Semiconductors - Discussion
Discussion Forum : Semiconductors - General Questions (Q.No. 5)
5.
As the forward current through a silicon diode increases, the internal resistance
Discussion:
28 comments Page 2 of 3.
Kanika said:
1 decade ago
According to ohms law V=IR.
So current is inversely proportional to resistance.
Hence as the current increases, resistance decreases.
So current is inversely proportional to resistance.
Hence as the current increases, resistance decreases.
Akshay said:
7 years ago
We can see in the characteristics of a diode. It's slope (1/R) increases on increasing current, thus it means that are will decrease.
Narvaneni.suresh said:
1 decade ago
According to ohms law V=IR. So the current is inversely proportional to resistance. The resistance decreases in forward bias.
Krishnakumar said:
1 decade ago
It doesn't obeys ohms law. Dynamic resistance is the only reason for this since it depends upon temperature and current.
RAMESH CRPF said:
1 decade ago
YES it is! because increase in current means increase in temperature so temp is inv.proportional to R.
Kumar prabhat said:
1 decade ago
Relation between R and I is inversely proportional. Diode current increases so resistance decreases.
Nitin said:
1 decade ago
Internal resistance rd= 26 mV/Diode current.
So it decreases when forward current increases.
So it decreases when forward current increases.
Madhuri said:
1 decade ago
When conduction takes place in the circuit having a diode then the diode acts as conductor.
Vipul gupta said:
1 decade ago
I think the internal resistance must be the same but only the actual resistance changes.
Parmar vijaykumar said:
1 decade ago
Diode has dynamic resistance that is reason increasing in I cause to decrease in R.
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