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Stage 1
Answer 3 questions correctly in a row.
An electric guitar amplifier is powered by a long, straight wire that carries 0.185 amps. What is the strength of the wire's magnetic field at a distance of 2.5 centimeters from it?
Use 7 for the permeability of free
µ0
=
4
pi
×
10
–
T
m/A
space.
Write your answer in scientific notation, rounded to one decimal
place.
teslas
ref_doc_title.
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