In the circuit shown,if the forward voltage drop for the diode is $0.5\, V$,the current in the circuit will be.....$mA$.

Assuming that the junction diode is ideal, find the current in the arrangement shown in the figure. (in $\text{mA}$)

Which one of the following represents a forward-biased diode?

The potential barrier in a $p-n$ junction diode is due to

The figure shows a circuit in which three identical diodes are used. Each diode has a forward resistance of $20\,\Omega$ and an infinite backward resistance. Resistors $R_1 = R_2 = R_3 = 50\,\Omega$. The battery voltage is $6\,V$. The current through $R_3$ is.....$mA$.

$P-N$ junction is said to be forward biased,when