A single-coil loop of radius r = 7.00 mm, shown below, is formed in the middle...
A single-coil loop of radius r = 7.00 mm, shown below, is formed
in the middle of an infinitely long, thin, insulated straight wire
carrying the current i = 37.0 mA.
What is the magnitude of the magnetic field at the center of the
loop?
Homework Answers
the equation for magnetic field due to wire is
B = uo i/ 2pi r
magnetic field due to circular loop is
B = uo i/ 2 r
B net = uo i/ 2pi r+ uo i/ 2r
= 2 * 10^-7 ( 0.037)/7* 10^-3) + 2 pi * 10^-7 ( 0.037)/7* 10^-3)
= 4.37 * 10^-6 T
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