What happens to the resistance of a resistor when its temperature increases, according to the material?

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Multiple Choice

What happens to the resistance of a resistor when its temperature increases, according to the material?

Explanation:
When temperature goes up, the atoms in a metal vibrate more and obstruct the movement of electrons more often. These extra collisions make it harder for current to flow, so the resistivity increases. That’s why metal resistors typically have higher resistance at higher temperatures, often summarized by R = R0(1 + αΔT) with a positive α. Some materials (like certain thermistors) behave differently, but for a standard metal conductor, resistance increases with temperature.

When temperature goes up, the atoms in a metal vibrate more and obstruct the movement of electrons more often. These extra collisions make it harder for current to flow, so the resistivity increases. That’s why metal resistors typically have higher resistance at higher temperatures, often summarized by R = R0(1 + αΔT) with a positive α. Some materials (like certain thermistors) behave differently, but for a standard metal conductor, resistance increases with temperature.

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