Electronics and Communication Engineering - Materials and Components

21.
If ω0 is the angular frequency of rotation of electron in the absence of magnetic field, the angular frequency ω, when a magnetic field B is acting is ω ≅ ω0 + (e/2m)B.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

22.
The resistance of a superconductor is
low
very low
very very low
zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.

23.
Dielectric constant, under the condition of alternating fields, is a complex quantity.
True
False
Answer: Option
Explanation:
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24.
In an homogeneous dielectric subjected to an electric field E, the dipole moment per unit volume is ∈0(∈r - 1) E.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.

25.
For a superconductor, magnetisation M in a field H is
extremely small
- H
- I
zero
Answer: Option
Explanation:
No answer description is available. Let's discuss.