Superconductivity
Physics ⇒ Electricity and Magnetism
Superconductivity starts at 11 and continues till grade 12.
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A superconducting ring is set into motion with a current. How long will the current persist (ideally)?
Describe the difference in magnetic field behavior between Type I and Type II superconductors.
Describe what happens to the electrical resistance of mercury as it is cooled below its critical temperature.
Explain why resistance drops to zero in a superconductor according to BCS theory.
A superconducting ring is set into motion with a current. How long will the current persist (ideally)?
A superconductor has a critical temperature of 10 K. Will it exhibit superconductivity at 15 K?
Calculate the energy loss per second in a superconducting wire carrying a current of 5 A below its critical temperature.
Calculate the resistance of a 2 m long superconducting wire below its critical temperature.
Which of the following is a high-temperature superconductor?
(1) YBa2Cu3O7
(2) Aluminum
(3) Silver
(4) Gold
Which of the following is a limitation of using superconductors in everyday applications?
(1) High cost of cooling
(2) High resistance
(3) Weak magnetic fields
(4) Low current capacity
Which of the following is a property of a superconductor below its critical temperature?
(1) Infinite resistance
(2) Zero resistance
(3) High magnetic permeability
(4) High thermal conductivity
Which of the following is NOT a characteristic of superconductors?
(1) Zero electrical resistance
(2) Expulsion of magnetic fields
(3) Infinite thermal conductivity
(4) Critical temperature
Superconductors are perfect ______ of magnetic fields.
The BCS theory states that electrons in a superconductor form pairs called ______ pairs.
The critical current is the maximum current a superconductor can carry without losing its ______ property.
The critical magnetic field (Hc) of a superconductor is the maximum magnetic field it can withstand before losing its ______ property.
A superconductor has a critical temperature of 10 K. Will it exhibit superconductivity at 15 K?
True or False: All metals become superconductors at sufficiently low temperatures.
True or False: High-temperature superconductors can operate at temperatures above the boiling point of liquid nitrogen (77 K).
True or False: Superconductors allow magnetic fields to penetrate their interior below the critical temperature.
