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2. Definition of a superconductor

  • an insulator with no resistance
  • a conductor with no resistance
  • a conductor with no current

3. Definition of superconducting transition temperature

  • the temperature at which a material, when cooled suddenly loses all its electrical resistance
  • the temperature at with a material, when cooled, loses all its resistance
  • the temperature at which a material becomes solid

4. Principle of conservation of energy

  • energy can only be transferred to others
  • energy cannot be created or destroyed only transferred
  • energy can be created or destroyed

5. what is ohms law?

  • the current flowing through a metal wire at a constant temperature in inversely proportional to the pd across it
  • the current flowing through a metal wire at a constant temperature is proportional to the pd across it
  • the current flowing through an insulator at a changing temperature is proportional to the pd across it
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