First slide

Diodes

Question

In a reverse biased diode, when the applied voltage changes by 2V, the current is found to change by 0.25μA. The reverse bias resistance of the diode is

Easy

A

$2 x 10^{6} Ω$
B

$8 x 10^{5} Ω$
C

$8000 Ω$
D

$8 x 10^{6} Ω$

Solution

$D y n a m i c R e s i s \tan c e : R = \frac{Δ V}{Δ I} = \frac{2}{0.25 \times 10^{- 6}} = 8 \times 10^{6} Ω$

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