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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 8
16.
Carbon steel has a residual flux density of 1 Wb/m2.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
When an atom of polarizability a is placed in an electric field E, the energy stored in atom is 0.5 a E2.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The charge per proton is
1.6 x 10-19 C
2.6 x 10-19 C
0.6 x 10-19 C
1.6 x 10-13 C
Answer: Option
Explanation:

Because charge on proton is positive but numerically equal to that on electron.

19.
In terms of Planck's constant h, the orbital angular momentum of an electron is
h
2ph
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
The merger of hole and free electron is called
covalent bonding
recombination
thermal energy
free electrons
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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