Q.1
How is the P-type doping works?
  • Adding an element which has an extra electron
  • Adding an element which has a less electron
  • Adding an element which has an extra Neutron
  • Adding an element which has a less Neutron
Q.2
How is the N-type doped semiconductor made?
  • Adding an element which has an extra electron
  • Adding an element which has a less electron
  • Adding an element which has an extra Neutron
  • Adding an element which has a less Neutron.
Q.3
What material is used for p-type doping?
  • copper
  • Iron
  • Boron
  • Phosphorous
Q.4
What are two types of doping?
  • P-type
  • N-type
  • M-type
  • Both A & B
Q.5
A pn junction is formed by
  • the recombination of electrons and holes
  • ionization
  • the boudary of a p-type and an n-type material
  • the collision of a proton and a neutron
Q.6
Copper, silver and gold are good
  • insulators
  • semiconductors
  • conductors
  • super insulators
Q.7
Hole is
  • an anti-particle of electron
  • a vacancy created when an electron leaves a covalent bond.
  • absence of free electrons.
  • an artifically created particle
0 h : 0 m : 1 s