We have current when the charge carriers have a net drift velocity Vd superposed on any random motion. By convention, the current density has the same direction as the drift velocity of positive charge carriers (and the opposite direction as the vd of the negative charge carriers). Which of the following statement is true about the flow of the negative charge carriers

University Physics Volume 2
18th Edition
ISBN:9781938168161
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Chapter9: Current And Resistance
Section: Chapter Questions
Problem 24P: A conductor carries a current that is decreasing exponentially with time. The current is modeled as...
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We have current when the charge carriers have a net drift velocity
Vd superposed on any random motion. By convention, the current density
has the same direction as the drift velocity of positive charge carriers (and
the opposite direction as the vd of the negative charge carriers). Which of
soft
the following statement is true about the flow of the negative charge carriers
gle
O The drift velocity vd, of negative charge carriers, has the same direction as the current
density J.
ome
O The drift velocity vd, of negative charge carriers, is opposite to direction as the current
density J.
The drift velocity vd , of negative charge carriers, is perpendicular to direction as the
current density J.
ware
rizo..
O Non of the above
icrosoft
Teams
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Transcribed Image Text:We have current when the charge carriers have a net drift velocity Vd superposed on any random motion. By convention, the current density has the same direction as the drift velocity of positive charge carriers (and the opposite direction as the vd of the negative charge carriers). Which of soft the following statement is true about the flow of the negative charge carriers gle O The drift velocity vd, of negative charge carriers, has the same direction as the current density J. ome O The drift velocity vd, of negative charge carriers, is opposite to direction as the current density J. The drift velocity vd , of negative charge carriers, is perpendicular to direction as the current density J. ware rizo.. O Non of the above icrosoft Teams Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Save and P Type here to search
Expert Solution
Step 1

The correct answer is option 2.

The current density is the flow of current from the unit area of the wire. Its direction is same as flow of current and flow of current is flow of positive current. So drift velocity of negative charge carrier is opposite to the current density.

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OpenStax