Assuming that the junction diode is ideal, the current in the arrangement shown in the circuit diagram is (in $ mA$)

The characteristic graph of a diode at different temperatures is shown. What is the relationship between the temperatures?

Consider a circuit consisting of a capacitor $(20 \mu\text{F})$, a resistor $(100 \Omega)$, and two identical diodes as shown in the figure. The resistance of each diode under forward biasing condition is $10 \Omega$. The time constant of the circuit is $\alpha \times 10^{-3} \text{ s}$. The value of $\alpha$ is . . . . . . .

Consider a $p-n$ junction as a capacitor, formed with $p$ and $n$-materials acting as thin metal electrodes and depletion layer width acting as separation between them. Basing on this, assume that an $n-p-n$ transistor is working as an amplifier in $CE$ configuration. If $C_1$ and $C_2$ are the base-emitter and collector-emitter junction capacitances, then :

Which of the following components cannot be easily fabricated or obtained from an $IC$ (Integrated Circuit)?

Two ideal diodes are connected to a battery as shown in the circuit. The current supplied by the battery is......$A$