Multiple Choice QuestionsIn the figure shown, if the diode forward voltage drop is 0.2 V, the voltage difference between A and B is
2.2 V
1.3 V
0
0.5 V
A.
2.2 V
The voltage drop,across 5 kΩ resistance is given by
V = 0.2 × 10-3 × 5 × 103
V = 10 V
Applying the KVL (Kirchoff's voltage Law)
VAB = 1 + 0.2 + 1 [Voltage drop across diode = 0.2 V]
VAB = 2.2 V
Which of the following semi-conducting device is used as voltage regulator ?
LASER diode
Zener diode
Solar cell
Photo diode
If l1, l2, l3 are the lengths of the emitter,base and collector of a transistor, then
l3 < l2 < l1
l1 = l2 = l3
l3 < l1 < l2
l2 < l1 < l3
When the conductivity of a semiconductor is only due to breaking of covalent bonds, the semiconductor is called
intrinsic
extrinsic
p-type
n-type
Switch
