Which is the best conducting material under room temperature?

<p>The best conductor of electricity is Silver (Ag) at room temperature. It is not used in normal wiring even though being the best conductor because of its high cost.</p><ul><li data-start="114" data-end="198"><p data-start="116" data-end="198"><strong data-start="116" data-end="158">Electrical Conductivity (<math ><semantics><mrow><mi>? </mi></mrow>&lt;annotation encoding="application/x-tex"&gt;\sigma</annotation></semantics></math>)</strong>: <math ><semantics><mrow><mn>6.3</mn><mo>*</mo><msup><mn>10</mn><mn>7</mn></msup><mtext> S/m (the highest among all metals)</mtext></mrow>&lt;annotation encoding="application/x-tex"&gt;6.3 \times 10^ {7} \ \text {S/m}</annotation></semantics></math></p></li><li data-start="199" data-end="293"><p data-start="201" data-end="293"><strong data-start="201" data-end="240">Electrical Resistivity (<math ><semantics><mrow><mi>? </mi></mrow>&lt;annotation encoding="application/x-tex"&gt;\rho</annotation></semantics></math>)</strong>: <math ><semantics><mrow><mn>1.59</mn><mo>*</mo><msup><mn>10</mn><mrow><mo>? </mo><mn>8</mn></mrow></msup><mtext>&nbsp;</mtext><mi mathvariant="normal">? </mi><mo>? </mo><mtext>m</mtext></mrow>&lt;annotation encoding="application/x-tex"&gt;1.59 \times 10^ {-8} \ \Omega \cdot \text {m}</annotation></semantics></math> (the lowest among all metals)</p></li></ul>

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