Who was the first person to observe superconductivity? 1.Leon Cooper 2.Walther Meissner 3.Sir James Dewar 4.Heike Kamerlingh- Onnes.

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Presentation transcript:

Who was the first person to observe superconductivity? 1.Leon Cooper 2.Walther Meissner 3.Sir James Dewar 4.Heike Kamerlingh- Onnes

The technological advance that allowed Onnes to observe superconductivity was? 1.liquefying helium (T = 4 K) 1.solidifying hydrogen (T = 14 K). 2.liquefying hydrogen(T = 20 K) 3.liquefying nitrogen (T = 77 K)

The first superconducting material discovered was… 1.Copper 2.Mercury 3.Helium 4.YBCO

Which of the following is NOT a property of a superconductor? 1.The electrical resistance becomes zero. 2.The superconducting properties develop abruptly below a critical temperature. 3.A lot of energy is lost to resistive heating. 4.The superconductor expels magnetic fields.

What does a Cooper pair refer to? 1.Two electrons that attract each other due to interactions with the lattice atoms. 2.Two atoms that vibrate in unison to improve conduction. 3.The regular current and super current in a superconductor. 4.The north and south magnetic poles induced in a superconductor.

Part of the theory of superconductivity relies on the fact that electrons travel together through the material as waves, without bouncing off the atoms in the superconductor. This idea of particles acting like waves is: 1.resistance 2.Newtonian physics 3.Plinko 4.quantum mechanics

A high-T C superconductor becomes a superconductor at a temperature… 1.near the temperature of liquid helium. 2.above the temperature of liquid nitrogen but below room temperature. 3.near typical room temperature. 4.above room temperature but below the boiling point of water.

Which of the following is not a possible application of high temperature superconductors? 1.loss-less power transmission. 2.high power electromagnets. 3.quantum computing. 4.magnetically levitated trains.

Which of these explains the principle reason that Maglev trains are able to levitate? 1.The formation of Cooper Pairs in the BCS theory. 2.Condensation of liquid Helium. 3.Superconductors have north and south magnetic poles. 4.The expelling of magnetic fields due to the Meissner effect.

How many Nobel Prizes have been awarded based on work related to superconductivity? 1.Zero 2.Two 3.Five 4.Nine