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Materials used for precision resistors should have

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Materials used for precision resistors should have
1. low resistivity
2. high resistance temperature
3. high thermoelectric emf against copper
4. none of these
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Correct Answer - Option 4 : none of these

Resistors and resistive networks are extensively used in instrumentation and measurement work. The foremost properties of materials used in resistors meant for precision work are given below.

  • Stability or permanence with time
  • Low resistance temperature coefficient
  • Low thermoelectric emf with copper
  • High resistivity
  • Resistance to oxidation
  • Corrosion and moisture
  • Ease of manufacture and low cost.
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