Copper Resistivity Temperature Dependence Quiz

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What does the solid line in Fig 2.10 represent?

Conduction electrons

Lattice vibrations

Thermal conductivity (correct)

Electrical conductivity

Which material has the highest electrical conductivity?

Mercury (Hg)

Gold (Au) (correct)

Aluminum (Al)

Steel (1080)

What is the relationship between thermal conductivity and electrical conductivity according to Fig 2.10?

They are inversely proportional (correct)

They have an exponential relationship

They are directly proportional

They are not related

Which metal/alloy has the lowest thermal conductivity?

Gold (Au) Signup and view all the answers

What is responsible for carrying thermal energy in metals, as mentioned in the text?

Conduction electrons Signup and view all the answers

In what type of materials do lattice vibrations play a significant role in heat conduction?

Insulators Signup and view all the answers

Which metal has the highest resistivity at room temperature?

Silver Signup and view all the answers

At what approximate temperature does nickel go through a magnetic to non-magnetic transformation?

1043 K Signup and view all the answers

What metal has a resistivity that decreases most significantly with increasing temperature?

Tin Signup and view all the answers

Which metal undergoes a magnetic to non-magnetic transformation at approximately 627 K?

Nickel Signup and view all the answers

What type of transformation does iron go through at approximately 1043 K?

Curie transformation Signup and view all the answers

Which metal has the highest resistivity among the listed metals?

Platinum Signup and view all the answers

What is the relationship between resistivity and temperature in copper above 100 K?

Directly proportional Signup and view all the answers

At low temperatures, what is the relationship between resistivity and temperature in copper?

Proportional to T^5 Signup and view all the answers

What does the inset on the log-log plot below 100 K show about the relationship between resistivity and temperature?

Approaches the residual resistivity Signup and view all the answers

What temperature is near the melting point of copper mentioned in the text?

1358 K Signup and view all the answers

In what condition is the power radiated from a light bulb equal to the electrical power dissipated in the filament?

2408 °C Signup and view all the answers

What is the nature of metal conductivity discussed in the text?

Due to conduction electrons Signup and view all the answers