A-LEVEL Physics: 5.2.3: Superconductivity (SaveMyExams)

Question 1

Resistance means that when Electricity Flows Through a Material, it ___ ___, & the Electrical Energy is…

Answer 1

Heats Up, Dissipated as Thermal Energy.

Question 2

How Can the Resistivity of a Material be Lowered?

Answer 2

By Lowering its Temperature.

Question 3

If a Material is Cooled Below the ___ ___, its Resistivity Drops to ~0Ωm. It is now a…

Answer 3

Critical Temperature. Superconductor.

Question 4

What is a ‘Superconductor’?

Answer 4

A Superconductor is a Material with No Resistance Below its Critical Temperature.

Question 5

What is the ‘Critical Temperature’?

Answer 5

The Critical Temperature is the Temperature at which a Material Becomes a Superconductor.

Question 6

Superconductors are Useful for Applications that Require Large Electric Currents. Why?

Answer 6

Because Superconductors have Virtually No Resistivity, so No Electrical Energy is Dissipated as Thermal Energy. Efficient.

Question 7

Due to having Virtually No Resistivity, Superconductors are Useful for: (2)

Answer 7

-The Production of Strong Magnetic Fields.

-The Reduction of Energy Loss / Dissipation in the Transmission of Current.