Question

Relative permittivity and permeability of a material are \( \varepsilon_r \) and \( \mu_r \), respectively. Which of the following values of these quantities are allowed for a diamagnetic material?

• A. \( \varepsilon_r = 0.5, \mu_r = 1.5 \)
• B. \( \varepsilon_r = 1.5, \mu_r = 0.5 \)
• C. \( \varepsilon_r = 0.5, \mu_r = 0.5 \)
• D. \( \varepsilon_r = 1.5, \mu_r = 1.5 \)

Hint:

For diamagnetic materials, remember \(\mu_r<1\) and \(\varepsilon_r>1\). This helps distinguish them from other types of materials.

Answer 1

The Correct Option is B

The relative permittivity \((\varepsilon_r)\) and relative permeability \((\mu_r)\) of a diamagnetic material follow specific rules: \[ \mu_r<1 \quad \text{and} \quad \varepsilon_r>1. \] From the given options: \[ \varepsilon_r = 1.5, \mu_r = 0.5 \quad \text{are correct}. \] Final Answer: \[ \boxed{\varepsilon_r = 1.5, \mu_r = 0.5} \]