Question

(Measurement of Resistance) Current causes the temperature of a real resistor to increase. Why? What effect does this heating have on the resistance? Explain.

Answer 1

Resistance in the wire increases when the temperature of the wire is increases.

What effect does this heating have on the resistance?

Heating the metal conductor causes atoms to vibrate more that makes more difficult for the electrons to flow through the conductor and thus increasing resistance.

So we can conclude that resistance in the wire increases when the temperature of the wire is increases.

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