The current gain for a transistor working as common base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is
Which one of the following is the weakest kind of the bonding in solids?
Ionic
Metallic
Van der Waals'
Covalent
The correct relationship between the two current gains and in a transistor is
Which of the following when added as an impurity into silicon produces n-type semiconductor?
P
Al
B
Mg
emitter
base
collector
Any of the above depending upon the nature of transistor.
At absolute zero, Si acts as
non-metal
metal
insulator
None of these
When a triode is used as an amplifier the phase difference between the input signal voltage and the output is
zero
Phosphorus
Aluminium
Magnesium
Both (b) and (c)
The transfer ratio β of a transistor is 50. The input resistance of the transistor when used in the common emitter configuration is 1kΩ. The peak value of the collector AC current for an AC input voltage of 0.01V peak is
100 μA
0.01 mA
0.25 mA
500 μA
When n-type semiconductor is heated
number of electrons increases while that of holes decreases
number of electrons and holes remain same
number of electrons and holes increases equally
