If a small amount of Cu is added to Ni conductor, then

Question - If a small amount of Cu is added to Ni conductor, then

Options:

A . Resistivity of Ni will decrease at all temperatures because Cu is a better conductor than Ni

B . Residual resistivity of Ni at low temperature will increase as Cu atoms act as defect centres

C . Resistivity of Ni will increase at all temperatures as Cu destroys the periodicity of Ni and acts as defects

D . Resistivity of Ni remains the same

Answer: Option C

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