Practice question
Question
Which of the following materials has the highest resistivity?
Explanation
Resistivity ( rho ) distinguishes materials: metals have low resistivity ( 10⁻²to 10⁻⁸Ω m ), semiconductors intermediate ( 10⁻⁵to 10⁶Ω m ), and insulators high ( 10¹⁰to 10¹⁹Ω m ). Among the options, insulators have the highest resistivity.
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