Answer
$B = 10~\mu T$
Work Step by Step
We can find the magnitude of the magnetic field:
$i = \frac{BHv}{R}$
$B = \frac{iR}{Hv}$
$B = \frac{(3.0\times 10^{-6}~A)(0.020~\Omega)}{(0.015~m)(0.40~m/s)}$
$B = 10~\mu T$
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 30 - Induction and Inductance - Problems - Page 901: 81a
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