Manganin and constantan have a low temperature coefficient of resistivity which means thata)their resistance values change very little with temperatureb)their resistance values only change at low temperaturesc)their resistance values change greatly with temperatured)their resistance values do not change with temperatureCorrect answer is option 'A'. Can you explain this answer?

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Manganin and constantan have a low temperature coefficient of resistivity which means that

a)
their resistance values change very little with temperature
b)
their resistance values only change at low temperatures
c)
their resistance values change greatly with temperature
d)
their resistance values do not change with temperature

Correct answer is option 'A'. Can you explain this answer?

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Manganin and constantan have a low temperature coefficient of resistiv...

The semiconductors and insulating material are having negative temperature coefficient of resistance. Therefore, the resistance of semiconductors and insulators decrease with rise in temperature. Alloys, such as manganin, constantan etc. are having very low and positive temperature coefficient of resistance.

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Manganin and constantan have a low temperature coefficient of resistiv...

Resistivity in manganin and constantan is approx. same with temperature change so A is the answer...

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Manganin and constantan have a low temperature coefficient of resistiv...

Obviously A cuz temperature has only less affect on its resistance and resistivity

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Manganin and constantan have a low temperature coefficient of resistivity which means thata)their resistance values change very little with temperatureb)their resistance values only change at low temperaturesc)their resistance values change greatly with temperatured)their resistance values do not change with temperatureCorrect answer is option 'A'. Can you explain this answer?

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