Consider the following statements connection with electromagnetic waves:
- Conducting medium behaves like an open circuit to the electromagnetic field.
- At radio and microwave frequencies the relaxation tOne is much less than the period.
- In loss-less dielectric the relaxation time is infinite.
- Intrinsic impedance of a perfect dielectric medium is a pure resistance.
Which of the above statements is correct?
A. 1 only.
B. 1 and 2 only.
C. 2 and 3 only
D. 2, 3 and 4.
Show Answer
Answer: D
Share your understanding of this question with the correct explanation.