$A$ thermistor is usually made of......

In the given circuit, the voltage across load resistance $(R_L)$ is: (in $V$)

$A$ $2 \text{ V}$ battery is connected to a diode in forward bias. $A$ voltage of $0.5 \text{ V}$ is dropped across the diode,which is independent of the current flowing through it. $A$ current greater than $10 \text{ mA}$ causes excessive heating and damages the diode. If a current of $5 \text{ mA}$ is required in the diode,what value of series resistance must be connected in the circuit?

In a reverse biased diode, when the applied voltage changes by $1 \, V$, the current is found to change by $0.5 \, \mu A$. The reverse bias resistance of the diode is

Two identical ideal diodes are connected to an ammeter and a $1 \ V$ d.c. source as shown. In which one of the following circuits will the ammeter not show any deflection?

When a forward bias is applied to a $p-n$ junction,it . . . . . . .