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

Two sides of a semiconductor germanium crystal $A$ and $B$ are doped with arsenic and indium respectively. They are connected to a battery as shown in the figure. The correct graph between current and voltage for the arrangement is:

In the figure shown, if the diode forward voltage drop is $0.2 \, V$, the voltage difference between $A$ and $B$ is (in $V$)

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 . . . . . . .

Two identical $P-N$ junctions are connected in series with a battery in three ways as shown in the figure. In which two circuits will the potential difference across the $P-N$ junctions be equal?

In the middle of the depletion layer of a reverse-biased $PN$ junction,the