- #1
Brewer
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Question asks:
A potential difference of 3.0V is applied to the ends of a copper wire which is 0.5m long. In copper at room temperature, the average time interval between collisions is [tex]\tau = 2.7*10^{-14}[/tex]s. What is the drift velocity of the free electrons in the wire?
Well, I know that [tex]V_{d} = \frac{eE\tau}{m}[/tex], but is E (electric field), just V/d? So it would be 6 (3/0.5)?
If it is that I thought that the electric field was radial due to the wire, and it seems to me that it should be along the wire for the electons to move.
A potential difference of 3.0V is applied to the ends of a copper wire which is 0.5m long. In copper at room temperature, the average time interval between collisions is [tex]\tau = 2.7*10^{-14}[/tex]s. What is the drift velocity of the free electrons in the wire?
Well, I know that [tex]V_{d} = \frac{eE\tau}{m}[/tex], but is E (electric field), just V/d? So it would be 6 (3/0.5)?
If it is that I thought that the electric field was radial due to the wire, and it seems to me that it should be along the wire for the electons to move.