$A$ diode having a potential difference of $0.5\, V$ across its junction,which does not depend on the current,is connected in series with a resistance of $20\, \Omega$ across a source. If $0.1\, A$ passes through the resistance,then what is the voltage of the source (in $, V$)?

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

Consider the junction diode as ideal. The value of current flowing through $AB$ is

Which one of the following represents a forward-biased diode?

The depletion layer in a silicon diode is $1 \, \mu m$ wide and the knee potential is $0.6 \, V$. The electric field in the depletion layer is:

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 $, A$)