First slide

P-N junction diode

Question

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

Moderate

A

100 $Ω$
B

200 $Ω$
C

400 $Ω$
D

500 $Ω$

Solution

$R = \frac{(2.6 - 0.6)}{5 \times 10^{- 3}} = 400 Ω$

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