Answer
$i = \rho~v~\pi~R^2$
Work Step by Step
We can find an expression for the current:
$i = \rho~v~A$
$i = \rho~v~\pi~R^2$
Fundamentals of Physics Extended (10th Edition)
by Halliday, David; Resnick, Robert; Walker, Jearl
Published by
Wiley
ISBN 10:
1-11823-072-8
ISBN 13:
978-1-11823-072-5
Chapter 26 - Current and Resistance - Problems - Page 769: 60a
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