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The V-I characteristic of a silicon diod...

The V-I characteristic of a silicon diode is shown in figure . The resistance of the diode at `I_D`=15 mA is

A

`5 Omega`

B

`10 Omega`

C

`2 Omega`

D

`20 Omega`

Text Solution

Verified by Experts

The correct Answer is:
B

In diagram, At I= 20 mA, V=0.8 V and
At I=10 mA, V=0.7 V
`r_(fb)=(DeltaV)/(DeltaI)=(0.1 V)/(10 mA)=10 Omega`
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NCERT FINGERTIPS ENGLISH-SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS -Assertion And Reason
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