Answer
$\int~B\cdot ds = 0$
Work Step by Step
We can find $\int~B\cdot ds$:
$\int~B\cdot ds = \mu_0~i_{enc}$
$\int~B\cdot ds = (4\pi\times 10^{-7}~H/m)(2.0~A+2.0~A-2.0~A-2.0~A)$
$\int~B\cdot ds = (4\pi\times 10^{-7}~H/m)(0)$
$\int~B\cdot ds = 0$
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 29 - Magnetic Fields Due to Currents - Problems - Page 860: 45b
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