$A$ $2V$ battery is connected across the points $A$ and $B$ as shown in the figure. Assuming that the resistance of each diode is zero in forward bias and infinity in reverse bias,the current supplied by the battery when its positive terminal is connected to $A$ is........$A$

For the forward biased diode characteristics shown in the figure,the dynamic resistance at $I_{D} = 3 \, \text{mA}$ will be $..... \, \Omega$.

When no bias is applied to a $P-N$ junction,the current is:

The energy of a photon in a monochromatic light of wavelength $621 \ nm$ matches with the band gap of a semiconducting material. Then the minimum energy required to create an electron-hole pair from the semiconductor is
[Take $hc = 1242 \ eV-nm$,where $h$ is Planck's constant and $c$ is speed of light in vacuum] (in $eV$)

If a $p-n$ junction diode is forward biased,then:

The cause of the potential barrier in a $p-n$ junction diode is