The resistance of a superconductor is

More Questions from Materials and Components

• In Fermi-Dirac statistics, the probability of electron occupation of an energy level equal to Fermi level is
• If ∈r = ∈r' - j∈r" tan δ = .
• The maximum temperature limit of class B insulation is
• Resistivity of metals consists of two parts, one part constant and the other temperature dependent.
• Assertion (A): The regular or irregular stacking of atoms has importanteffect on properties of materials. Reason (R): The arrangement of atoms in a given material can be studied using X-rays.
• Assertion (A): Both sodium and ferrous are ferromagnetic. Reason (R): Both sodium and ferrous have body centred cubic structure.
• Assertion (A): ∈0 has the dimensions of farad per meter. Reason (R): D = ∈0∈r E.
• Assertion (A): Drift velocity of electrons is proportional to the applied electric field E. Reason (R): The average drift velocity per unit field is called mobility.
• For iron, the ferromagnetic Curie temperature is
• In a valence crystal, the valence electrons

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