$A$ $2 \ V$ cell is connected across points $A$ and $B$ as shown in the figure. Assume that the resistance of each diode is zero in forward bias and infinity in reverse bias. The current supplied by the cell is (in $A$)

The circuit shown contains a $12 \, V$ battery,a $4 \, \Omega$ resistor,and two branches in parallel,each containing an ideal diode and a resistor. Branch $1$ has diode $D_1$ and a $3 \, \Omega$ resistor,while branch $2$ has diode $D_2$ and a $2 \, \Omega$ resistor. Determine the current flowing through the circuit. (in $, A$)

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

Which of the following statements is not correct when a junction diode is in forward bias?

In the reverse biasing of a $p-n$ junction diode,

What is the cause of the formation of the depletion layer in a $P-N$ junction?