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Questions  

When a silicon PN junction is in forward biased condition with series resistance , it has knee voltage of 0.6 V.  Current flow in it is 5 mA,  when PN junction is connected with 2.6V battery. The value of series resistance is

a
100 Ω
b
200 Ω
c
400 Ω
d
500 Ω

detailed solution

Correct option is C

R=2.6-0.65×10-3=400 Ω

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