A copper wire has a diameter of 0.60 mm. The number density of conduction electrons in copper is 8.5 x 1028 m-3. What isthe magnitudè of the drift velocity when the current in the wire is 9.0 A?6.7 x 10-3 mO 1.1 x 10-4 mO 2.3 × 10-3 mO 7.4 x 10-4 m8.3 x 10-5 m Useful Constants:k = 9.00 × 10ºNm²C28.85 x 10-12 C²Nm2%3De = 1.6 x 10-19Cme = 9.11 x 10mp = 1.67 × 10-27kg%3D-27mn= 1.68 x 10%3D

Given(s): Current, I=9.0 A The number density of conduction electrons, n=8.5 x 1028 m-3. Diameter,…

A copper wire has a diameter of 0.60 mm. The number density of conduction electrons in copper is 8.5 x 10° m the magnitude of the drift velocity when the current in the wire is 9.0 A? What is O 6.7 x 10-3 m 1.1 x 10-4 m O 2.3 x 10-3 m 7.4 x 10-4 m O 8.3 x 10-5 m

A copper wire has a diameter of 0.60 mm. The number density of conduction electrons in copper is 8.5 x 10° m the magnitude of the drift velocity when the current in the wire is 9.0 A? What is O 6.7 x 10-3 m 1.1 x 10-4 m O 2.3 x 10-3 m 7.4 x 10-4 m O 8.3 x 10-5 m

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter30: Atomic Physics

Section: Chapter Questions

Problem 29CQ: Which of the following are not allowed? State which rule is violated for any that are not allowed....

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

A copper wire has a diameter of 0.60 mm. The number density of conduction electrons in copper is 8.5 x 1028 m-3. What is
the magnitudè of the drift velocity when the current in the wire is 9.0 A?
6.7 x 10-3 m
O 1.1 x 10-4 m
O 2.3 × 10-3 m
O 7.4 x 10-4 m
8.3 x 10-5 m

Useful Constants:
k = 9.00 × 10º
Nm²
C2
8.85 x 10-12 C²
Nm2
%3D
e = 1.6 x 10-19
C
me = 9.11 x 10
mp = 1.67 × 10-27kg
%3D
-27
mn
= 1.68 x 10
%3D

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