NEW
Font size
Worksheetssemiconductor
Total questions: 10
Worksheet time: 5mins
The number of electrons in the valence shell of semiconductors is ________.
less than 4
equal to 4
more than 4
zero
If the temperature of semiconductor is increased, the number of electrons in the valence band will ______.
decrease
remains same
increase
either increase or decrease
Electric conduction through a semiconductor is due to :
Electrons
holes
none of these
both electrons and holes
In conduction band of solid, there is no electron at room temperature. The solid is ______ .
semiconductors
insulator
conductor
metal
In the crystal of pure Ge or Si, each covalent bond consist of ______ .
1 electrons
2 electrons
3 electrons
4 electrons
A pure semiconductor is _____.
an extrinsic semiconductor
an intrinsic semiconductor
p-type semiconductor
n-type semiconductor
The energy levels of holes are:
in the valence band
in the conduction band
in the band gap but close to valence band
in the band gap but close to conduction band
The potential barrier in p-n diode is due to to:
depletion of positive charges near the junction
accumulation of positive charges near the junction
depletion of negative charge near the junction
accumulation of positive and negative charges near the junction
Current through a reverse biased p-n junction, increases abruptly at:
Breakdown voltage
0.0 V
0.3 V
0.7 V
For an ideal junction diode,
forward bias resistance is infinity
forward bias resistance is zero
reverse bias resistance is infinity
both (B) and (C)
