If the band gap between valence band and conduction band in a material is 5.0 eV, then the material is
Options
(a) semiconductor (b) good conductor (c) superconductor (d) insulator
Correct Answer:
insulator
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
Options
(a) Variation of scattering mechanism with temperature (b) Crystal […]
On adjusting the P-N junction diode in forward bias,
Options
(a) Depletion layer increases (b) Resistance increases (c) Both decreases (d) none of these
Correct Answer:
Both decreases
Explanation:
In forward bias arrangement of […]
In insulators (CB is Conduction Band and VB is Valence Band)
Options
(a) VB is partially filled with electrons (b) CB is partially filled with electrons (c) CB is empty and VB is […]
If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be
Options
(a) 50 Hz (b) 70.7 Hz (c) 100 Hz (d) 25 Hz
Correct […]
The conductivity in the intrinsic semiconductor does not depend on
Options
(a) band gap (b) temperature (c) fermi energy (d) effective mass of charge carriers
Correct Answer:
fermi energy
Explanation:
No explanation available. […]
In the middle of the depletion layer of a reverse-biased P-N junction, the
Options
(a) Potential is zero (b) Electric field is zero (c) Potential is maximum (d) Electric field is maximum
Correct […]
For non-conductors, the energy gap is
Options
(a) 6 eV (b) 1.1 eV (c) 0.8 eV (d) 0.3 eV
Correct Answer:
6 eV
Explanation:
No explanation available. Be the first to write the […]
The input characteristics of a transistor in CE mode is the graph obtained by plotting
Options
(a) Iв against Iс at constant Vсᴇ (b) Iв against Vвᴇ at constant Vсᴇ (c) Iв against […]
The energy band gap is maximum in
Options
(a) Metals (b) Superconductors (c) Insulators (d) Semiconductors
Correct Answer:
Insulators
Explanation:
No explanation available. Be the first to write the explanation for this question […]
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