Choose the correct alternative :(a) Alloys of metals usually have (greater/less) resistivity than that of their constituent metals.(b) Alloys usually have much (lower/higher) temperature coefficients of resistance than puremetals.(c) The resistivity of the alloy manganin is nearly independent of increases rapidly with increaseof temperature.(d) The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of theorder of (10^22 / 10^3) .

Choose the correct alternative :(a) Alloys of metals usually have (gre

1.	Choose the correct alternative :(a) Alloys of metals usually have (greater/less) resistivity than that of their constituent metals.(b) Alloys usually have much (lower/higher) temperature coefficients of resistance than puremetals.(c) The resistivity of the alloy manganin is nearly independent of increases rapidly with increaseof temperature.(d) The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of theorder of (10^22 / 10^3) .
Answer» SOLUTION : (a) greater (B) LOWER (c) nearly independent (d) `10^22`

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