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Current Electricity: Resistivity of Alloys MCQ

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Resistivity of AlloysMediumQuestion 31669

Question

Nichrome and Manganin are preferred for making resistors because they have:
  1. A
    Very low resistivity
  2. B
    Very high temperature coefficient
  3. C
    High resistivity and low temperature coefficient
    Correct
  4. D
    Low resistivity and high temperature coefficient

Correct answer

High resistivity and low temperature coefficient

Explanation

High ρ allows compact resistors. Low temperature coefficient (α) means resistance changes little with temperature — ideal for precision resistors and heating elements.

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