A. Holes only
B. Electrons only
C. Electron and holes both
D. All of the above
Related Mcqs:
- On the basis of band theory of solids the semiconductors have _____________________?
A. A party filled valence band and totally empty conduction band
B. A completely filled valence band a totally empty conduction band and a very wide forbidden band
C. A completely filled valence band a partially filled conduction band and a narrow forbidden band
D. A partly filled valence band a totally empty conduction band and a wide forbidden band - A cube of side 5 cm has a charge of 6 C. The surface density of charge is_________?
A. 100 C m–2
B. 200 C m–2
C. 300 C m–2
D. 400 C m–2Submitted by: Tauseef Ali
- The net charge on n-type material is____________________?
A. Positive
B. Negative
C. Both positive and negative
D. Neutral - The physics of moving charge particles is known as__________?
A. Plasma physics
B. Electro-static’s
C. Electro-magnetic
D. Electro-dynamics - Magnetic force acting on a unit positive charge moving perpendicular to the magnetic field with a unit velocity is called____________________?
A. magnetic flux
B. magnetic field intensity
C. magnetic induction
D. self inductance - When a particle of charge q and mass m enters into a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field it describes a circular path of radius___________________?
A. R=qB/mV
B. R=mV/qB
C. R=qmV/B
D. R=qmB/V - A particle having the mass of an electron and the charge of a proton is called a______________?
A. Antiproton
B. Positron
C. Gamma rays
D. Photon - The charge on beta particle is________________?
A. 1
B. -1
C. +2
D. -2 - The velocity of an oscillating charge as it moves to and fro along a wire is always_____________?
A. constant
B. zero
C. changing
D. infinite - A million electron are added to a pith ball. Its charge is________?
A. – 1.6 × 10–12 coulomb
B. – 1.6 × 10–13 coulomb
C. – 1.6 × 10 –18 coulomb
D. – 1.6 × 10 coulombSubmitted by: Tauseef Ali
