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प्रश्न
We use alloys for making standard resistors because they have ____________.
पर्याय
low-temperature coefficient of resistivity and high specific resistance
high-temperature coefficient of resistivity and low specific resistance
low-temperature coefficient of resistivity and low specific resistance
high-temperature coefficient of resistivity and high specific resistance
MCQ
रिकाम्या जागा भरा
उत्तर
We use alloys for making standard resistors because they have a low-temperature coefficient of resistivity and high specific resistance.
Explanation:
Alloys have high specific resistance and a low-temperature coefficient of resistivity. If `alpha` = low, the value of 'R' will not change much with temperature, and if particular resistance is high, the needed wire length will be less.
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