The example for non-ohmic resistance is

The width of the depletion layer is approximately .......

Assuming in forward bias condition there is a voltage drop of $0.7 \text{ V}$ across a silicon diode,the current through diode $D_1$ in the circuit is . . . . . . $\text{mA}$. (Assume all diodes in the given circuit are identical)

Assuming the ideal diode,draw the output waveform for the circuit given in the figure. Explain the waveform.

The current through an ideal $PN-$ junction diode shown in the following circuit diagram will be.......$mA$.

When a $P-N$ junction is in reverse bias,the current flowing through the junction is primarily due to: