Exercise: Materials And Components

Questions for: Materials And Components

Silicon and germanium are elements in the
A:
second column of periodic table
B:
third column of periodic table
C:
fourth column of periodic table
D:
fifth column of periodic table
Answer: C
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M = (μr - 1)H.
A:
True
B:
False
C:
D:
Answer: A
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When a potential is applied across an intrinsic semiconductor, holes flow
A:
towards positive terminal
B:
away from positive terminal
C:
in the external circuit only
D:
none of the above
Answer: B

Holes are positively charged and move away from positive terminal.

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The units of polarization of dielectric are
A:
B:
C:
Cm
D:
Answer: A

Polarization P = ∈0(∈r - 1)E.

Therefore units of Polarization = .

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Iron has a body centred cubic structure.
A:
True
B:
False
C:
D:
Answer: A
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