For a given electric current, the drift velocity of conduction electrons in a copper wire is $v_{d}$, and their mobility is $\mu$. When the current is increased at constant temperature

Question

$v_{d}$ decreases, $\mu$ remains the same

$v_{d}$ remains the same, $\mu$ decreases

$v_{d}$ increases, $\mu$ remains the same

$v_{d}$ remains the same, $\mu$ increases

Solution

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