In 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
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
A.
intrinsic
When conductivity of semiconductor is only due to breaking of covalent bond, then semiconductor is intrinsic (pure) because here due to thermal agitation, some covalent bond are broken and some electrons are free to conduct current.