In metals, why does electric conductivity decrease with the increase of temperature?
Correct answer: B. Because metal ions oscillations hinder electron movement
- A. Because electron movement decrease with the increase of temperature
- B. Because metal ions oscillations hinder electron movement
- C. Because electron direction changes at high temperature
- D. Because they pass heat current through collision of electrons
Explanation
The correct option is B because metal ion oscillations hinder electron movement. As temperature increases, the vibrational motion of metal ions disrupts the movement of electrons, reducing electrical conductivity in metals.
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