Question
For a diode connected in parallel with a resistor, which is the most likely current $I$-voltage $V$ characteristic?
✓
Answer
(a)
When $V$ is negative, diode is in reverse bias and it does not conducts. So, current-voltage relationship followed from Ohm's law is, $V=I R$
$\therefore V-I$ graph is straight line.
As $V$ grows in positive region, diode becomes conductive after knee voltage and af ter that current is approximately,
$I=I_s e^{V / n V_T}$
where, $I_s=$ saturation current in reverse bias, $V=$ voltage across diode $n$ and $V_T$ are diode constants. So, correct graph is
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