A uniform copper wire carries a current i amperes and has q charge carriers percubic meter. The length of the wire is l meters and its cross-section area is 
square metre. If the charge on a carrier is q coulombs, the drift velocity (in 
) is given by
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given: 
current, 
charge carrier current density 
, 
charge on the carrier 
area of cross-section = 
drift velocity 
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