Relative permittivity and permeability of a material are εr and μr, respectively. Which of the following values of these quantities are allowed for a diamagnetic material?
A
εr=1.5,μr=1.5
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B
εr=0.5,μr=1.5
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C
εr=1.5,μr=0.5
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D
εr=0.5,μr=0.5
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Solution
The correct option is Dεr=1.5,μr=0.5 The values of relative permeability of diamagnetic materials are slightly less than 1 and εr is quite high. According to the table given, one takes εr=1.5 and μr=0.5. Then the choice (c) is correct.