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Materials and Components

Q1: Which of the following are true for relative dielectric constant?
  1. It is dimensionless.
  2. It is equal to 1 for vacuum.
  3. It is equal to 1 for all substances.

A 1 and 2 only

B 2 and 3 only

C 1 and 3 only

D 1, 2 and 3

ANS:A - 1 and 2 only

∈r has no units and equal to 1 for vacuum. For other substances it has different value.



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