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प्रश्न
Amongst the following substances, the resistance will decrease with the increase in temperature in case of:
विकल्प
copper
carbon
brass
nichrome
MCQ
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उत्तर
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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