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Question
Define super conductivity and critical temperature. Plot the variation of resistance versus temperature in case of superconducting state of the material.
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Solution
Superconductivity is a state of matter exhibited by some normal conductors when their resistivity suddenly drops to zero at a very low temperature. The superconductivity property of a material can be easily be effected by temperature , magnetic field and current.
Superconductivity is a property of some conductors the resistivity of which suddenly drops to
zero at a certain low temperature , Tc. These materials behave as superconductors below the critical temperature , Tc and as normal conductors .
The CRITICAL TEMPERATURE is the temperature at which the normal state of a conductor changes to superconducting state. critical temperature is different for different superconductors.
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