Value of εr for various dielectrics is always
Correct answer: C. greater than unity
- A. less than unity
- B. equal to unity
- C. greater than unity
- D. no hard and fast rule
Explanation
εr is called relative permittivity. It is the ratio of permittivity of a substance ε and the permittivity of free space εo. εr = ε/ εo.As, the permittivity of of a substance is always greater than the permittivity of free space. So, their rotio will also, always be greater than 1
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