Sanya performed an experiment of obtaining characteristic curves of a junction diode. When she…
Physics20255 marksCase based
Sanya performed an experiment of obtaining characteristic curves of a junction diode. When she forward biased it, she found that beyond forward voltage $V = V_k$, the conductivity is very high. When she reverse biased the diode she found that a very small current (of about a few microamperes) flows in the diode. It remained constant even though she varied the voltage.
Figure 11Figure 12
(i)
In Figure 11, which one of the diodes is forward biased?
(ii)
What is meant by a saturation current?
(iii)
When applied voltage during forward bias is small, why does no current flow in the diode?
(iv)
The circuit shown in the Figure 12 below contains two diodes, each with a forward resistance of $50\ \Omega$ and with infinite resistance during reverse bias. If the battery voltage is $6\text{ V}$, then calculate the current through the $100\ \Omega$ resistance.
