In the case of forward biasing of a $PN-$ junction,which one of the following figures correctly depicts the direction of flow of majority charge carriers?

What is breakdown voltage and saturation current?

$A$ $2 \text{ V}$ battery is connected to a diode in forward bias. $A$ voltage of $0.5 \text{ V}$ is dropped across the diode,which is independent of the current flowing through it. $A$ current greater than $10 \text{ mA}$ causes excessive heating and damages the diode. If a current of $5 \text{ mA}$ is required in the diode,what value of series resistance must be connected in the circuit?

In the following figure,the diodes which are forward biased are:

$A$ realistic graph depicting the variation of the reciprocal of input resistance $(1/r_i)$ in an input characteristics measurement in a common emitter transistor configuration is:

In order to forward bias a $PN$ junction,the negative terminal of the battery is connected to