Exercise: Materials And Components

Questions for: Materials And Components

The fact that domains exhibits spontaneous magnetisation is
A:
first hypothesis is of Curie
B:
second hypothesis is of Weiss
C:
Curie-Weiss law
D:
Boltzmann's statistics
Answer: B
No answer description is available. Let's discuss.
The number of protons in a silicon atom are
A:
4
B:
8
C:
12
D:
14
Answer: D
No answer description is available. Let's discuss.
In p type semiconductor, the conductivity due to holes is (e = charge on hole, μp = hole mobility, p = hole concentration)
A:
B:
C:
peμp
D:
Answer: C
No answer description is available. Let's discuss.
All magnetic materials exhibit the phenomenon of saturation.
A:
True
B:
False
C:
D:
Answer: A
No answer description is available. Let's discuss.
In a metal, the valence electrons
A:
are not shared
B:
are shared only between neighbouring atoms
C:
are shared by all atoms
D:
either (b) or (c)
Answer: C

In a metal the valence electrons belong to all atoms.

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