Question

If a forward current of pn junction diode is 1ma then the value of dynamic resistance is

Answer 1

Answer:

A common pn junction diode drops a voltage of 0.7V when forward biased

Dynamic Resistance offered by diode is

R = V/I = 0.7V/1mA = 700ohms

Therefore dynamic resistance R = 700ohms

Answer 2

The value of dynamic resistance is 700 ohms.

Explanation:

• For forward biased pn junction diode, the forward voltage is approximately 0.7 volts.
• If a forward current of pn junction diode is 1 ma, then the dynamic resistance is given by using Ohm's law as :

$V=IR\\\\R=\dfrac{V}{I}\\\\R=\dfrac{0.7\ V}{10^{-3}\ A}\\\\R=700\ \Omega$

So, the value of dynamic resistance is 700 ohms.

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