Q. A source of $8V$ drives the diode in fig. through a current-limiting resistor of $100\ ohm$. Then the magnitude of the slope load line on the $V$-$I$ characteristics of the diode is
A) 0.01
B) 100
C) 0.08
D) 12.5
Explanation
(a) If $i$ is the current in the diode and $V$ is voltage drop across it, then for given figure voltage equation is
$i \times 100 + V = 8 \Rightarrow i = - \frac{1}{100}V + \frac{8}{100}$
$\Rightarrow i = - (0.01)V + 0.08$
Thus the slope of $i$-$V$ graph $= \frac{1}{R_{L}} = 0.01$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.