Question

Relative permitivity and permeability of a material area ε_r and μ_r respectively. Which of the following values of these quantities are allowed for a diamanetic material

(a) ε_r = 0.5 μ_r = 1.5

 (b) ε_r = 1.5, μ_r = 0.5

(c) ε_r = 0.5, μ_r = 0.5 

(d) ε_r = 1.5, μ_r = 1.5

Answer 1

Correct option (b) ε_r = 1.5, μ_r = 0.5    

Explanation:

For diamangnetic material 0 < μ_n < 1

and for any material ε_n > 1

so, (b) is correct