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Amongst the following substances, the resistance will decrease with the increase in temperature in case of:

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Question

Amongst the following substances, the resistance will decrease with the increase in temperature in case of:

Options

  • copper

  • carbon

  • brass

  • nichrome

MCQ
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Solution

Carbon

Explanation:

Carbon is a semiconductor; its resistance decreases when temperature rises. Copper is a metal, so its resistance increases with temperature. Brass and nichrome are alloys whose resistance changes very little or increases slightly.

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Chapter 7: Electric Circuits, Resistance and Ohm's Law - EXERCISE-1 [Page 150]

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Goyal Brothers Prakashan A New Approach to ICSE Physics [English] Class 10
Chapter 7 Electric Circuits, Resistance and Ohm's Law
EXERCISE-1 | Q 4. | Page 150
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