Drift Velocity and Conductor Radius
A current I is uniformly distributed across the cross-section of a cylindrical conductor with radius r. If the radius is doubled while the current I and the charge carrier density are held constant, how does the drift velocity of the charge carriers change?
A
Increases by a factor of 4
B
Decreases by a factor of 4
C
Decreases by a factor of 2
D
Remains unchanged
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