Answer
$B=1.25 \mu \mathrm{T} \text {. }$
Work Step by Step
$$
\text { Using formula that gives }\\ B=\frac{\mu_0 i_d r}{2 \pi R^2}\\\text { Puuting the values in above formula}\\B=1.25 \mu \mathrm{T} \text {. }
$$
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 32 - Maxwell's Equations; Magnetism of Matter - Problems - Page 970: 58d
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