Passage III

Tables 1 and 2 summarize information about the resistance of some 1-meter (m)-long aluminum and copper wires, respectively, that have different diameters. The resistance of a wire (reported in ohms) restricts the flow of electrons through the wire and results in the.conversion of electrical energy to heat. Table 3 reports the resistance, in ohms, of different lengths of 0.10-mm-diameter aluminum wire at 20°C.

16. According to the data in Tables l and 2, which of the following sets of conditions would lead to the lowest resistance through l m of wire?

Answer and Explanation

Your Answer is

Correct Answer is H

Explanation

It can be seen from table 1 that the larger the diameter, the smaller the resistance, and the lower the temperature, the smaller the resistance;

By comparing table 1 & table 2, it can be seen that the resistance of cooper is higher than that of aluminum Small, so you should choose copper, large diameter, low temperature