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The resistance R of a metallic conductor typically
ADecreases with rising temperature because more thermal motion helps electrons drift faster
BIncreases with rising temperature because lattice vibrations scatter electrons more
CIs independent of temperature
DDrops to zero at room temperature
Answer & Solution
Correct answer: B. Increases with rising temperature because lattice vibrations scatter electrons more
For metals, increased lattice vibrations at higher T scatter electrons more, raising R. (Semiconductors show the opposite trend because n increases with T.)
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