The built-in potential of a $p-n$ junction diode is $0.7 \,V$. If the diode is forward biased and the applied voltage is $0.3 \,V$, the effective barrier height is (in $\,V$)

The circuit shown below contains two ideal diodes,each with a forward resistance of $50\,\Omega $. If the battery voltage is $6\,V$,the current through the $100\,\Omega $ resistance (in Amperes) is

In the given circuit, the current through the battery is ...... $A$.

Which diode is in forward bias?

Which of the following circuits represents a forward biased diode? Choose the correct answer from the options given below.

The diode used in the circuit shown in the figure has a constant voltage drop of $0.5\; V$ at all currents and a maximum power rating of $100\; mW$. What should be the value of the resistor $R$,connected in series with the diode,to obtain the maximum current? (in $\Omega$)