Suppose the thickness of the depletion layer in a $P-N$ junction is $10^{-6} \ m$ and the value of the depletion barrier is $0.1 \ V$. Then the electric field is ....... $V \ m^{-1}$.

For the diagram shown,the resistances between points $A$ and $B$ when the ideal diode $D$ is forward biased is $R_1$ and when it is reverse biased is $R_2$. The ratio $R_1: R_2$ is

Two $PN$-junctions can be connected in series by three different methods as shown in the figure. If the potential difference across the junctions is the same,then the correct connections will be:

$A$ $2\,V$ battery is connected across $AB$ as shown in the figure. The value of the current supplied by the battery when in one case the battery's positive terminal is connected to $A$ and in the other case when the positive terminal of the battery is connected to $B$ will respectively be:

Which of the following represents a reverse-biased diode?

When a $p-n$ junction diode is forward biased,