Question

The change in current through a junction diode is 1.2 \mathrm{ma}1.2ma when the forward bias voltage is changed by 0.6 \mathrm{v}0.6v. The dynamic resistance is

Answer 1

The dynamic resistance is R = 500 ohm

Explanation:

As we know that the dynamic resistance in a diode circuit is the ratio of change in voltage and change in current across diode

Here we know that

$\Delta V = 0.6 Volts$

$\Delta i = 1.2 mA$

also we know by ohm's law

$\Delta V = \Delta i \times R$

so we have

$R = \frac{\Delta V}{\Delta i}$

$R = \frac{0.6}{1.2 \times 10^{-3}}$

[tex]R = 500 [tex]ohm

#Learn

Topic: Dynamic resistance of diode

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