Question

Choose the correct alternative:
(a) Alloys of metals usually have (greater/smaller) constituent metals.
(b) Alloys usually have much (lower/higher) temperature coefficients of resistance than pure metals.
(c) The resistivity of the alloy manganin is (nearly independent of/increases rapidly with increase of) temperature.
(d) The resistivity of a typical insulator (e.g., amber) is greater than that of a metal by a factor of the order of (10²²/10³).

Answer 1

(a) greater
(b) lower
(c) nearly independent of
(d) 10²²