$A$ waveform is applied to the following circuit. Assuming an ideal diode and ${R_1} = {R_2}$, which of the following output waveforms will be produced?

In the circuit, all three diodes $D_1, D_2, D_3$ have a forward resistance of $50 \text{ } \Omega$ each and infinite backward resistance. If the battery voltage is $5 \text{ V}$, find the current through the $100 \text{ } \Omega$ resistance. (in $\text{mA}$)

The voltage-current characteristic of a diode during forward bias is given by $I = 7.8 \times 10^{-5} e^{6.5 V_D}$, where $I$ is the current in $mA$ and $V_D$ is the diode voltage in $V$. Find the dynamic resistance of the diode in $\Omega$, when the current is $4 \ mA$.

If the internal resistance of the cell is negligible,then the current flowing through the circuit is: (in $A$)

In the following circuit,$PN$-junction diodes $D_1, D_2$,and $D_3$ are ideal. For the following potentials of $A$ and $B$,the correct increasing order of resistance between $A$ and $B$ will be:
$(i) V_A = -10\,V, V_B = -5\,V$
$(ii) V_A = -4\,V, V_B = -12\,V$

To make a $PN$ junction conducting,