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Q.

When a silicon PN junction is in forwad 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 2.6 V battery , the value of series resistance is

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a

100 Ω

b

200 Ω

c

400 Ω

d

500 Ω

answer is C.

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Detailed Solution

R=2.6-0.65×10-3=400 Ω
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When a silicon PN junction is in forwad 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 2.6 V battery , the value of series resistance is