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Electrical conductivity: Quiz
  

Question 1: At extremely low temperatures (not far from absolute zero), a few materials have been found to exhibit very high electrical conductivity in a phenomenon called ________.
Iron-based superconductorNiobiumSuperconductivityFlux pumping

Question 2: Electrical conductivity or specific conductance is a measure of a material's ability to conduct an ________.
Maxwell's equationsElectric currentElectric chargeMagnetic field

Question 3: The conductivity σ is defined as the ratio of the ________ J to the electric field strength E:
Current densityMaxwell's equationsMagnetic fieldCapacitance

Question 4: The temperature compensation slope for most naturally occurring ________ is about 2 %/°C, however it can range between (1 to 3) %/°C.
EarthWater resourcesWaterOxygen

Question 5: It is also possible to have materials in which the conductivity is ________, in which case σ is a 3×3 matrix (or more technically a rank-2 tensor), which is generally symmetric.
QuartzSiliconGeologyAnisotropy

Question 6: Over a limited temperature range, the electrical conductivity can be approximated as being directly proportional to ________.
Thermodynamic temperatureWater vaporLightningTemperature

Question 7: A conductor such as a ________ has high conductivity and a low resistivity.
HalogenMetalNonmetalNoble gas

Question 8: ________ is the inverse of electric conductivity
SiliconCarbonResistivityAluminium

Question 9: This slope is influenced by the ________, and can be easily determined in a laboratory.
GeochemistryDiabaseEarthBasalt

Question 10: An insulator like ________ has low conductivity and a high resistivity.
Borosilicate glassMACORGlassCranberry glass
















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