Most conducting materials such as copper,...

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Question 1 of 205eccefa3bacbc34ba4d47ead

Most conducting materials such as copper, aluminum, iron, nickel, and tungsten behave in such as way as the resistance and conductance is predictably effected by temperature. Which statement is true regarding this behavior?

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🔍 Key Concepts

• Ohm’s Law relationship between voltage, current, and resistance • How metal conductors behave when their temperature changes (typical temperature coefficient of resistance) • Difference between resistance and conductance (they are opposites)

💭 Think About

• For common metals used as conductors on ships, think about what happens to the motion of electrons when the wire gets hotter: does it become easier or harder for current to flow? • If resistance goes one way with temperature, what must happen to conductance, since conductance is the inverse of resistance? • Eliminate any option that conflicts with the normal behavior of common metallic conductors (not semiconductors) when temperature rises.

✅ Before You Answer

• Confirm that for common metallic conductors, the temperature coefficient of resistance is positive (resistance changes in one particular direction as temperature rises). • Check that conductance is defined as ( G = 1/R ), so if resistance increases, conductance must decrease, and vice versa. • Verify that the statement you choose matches the behavior of copper and aluminum wiring as they heat up under load.

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