Answer:
The strength of the magnetic field that the line produces is [tex]2x10^{-5} Tesla[/tex].
Explanation:
From Biot-Savart law, the equation to determine the strength of the magnetic field for any straight wire can be deduced:
[tex]B = \frac{\mu_{0}I}{2\pi r}[/tex] (1)
Where [tex]\mu_{0}[/tex] is the permiability constant, I is the current and r is the distance from the wire.
Notice that it is necessary to express the current, I, from kiloampere to ampere.
[tex]I = 1.0kA \cdot \frac{1000A}{1kA}[/tex] ⇒ [tex]1000A[/tex]
Finally, equation 1 can be used:
[tex]B = \frac{(4\pi x10^{-7}T.m/A)(1000A)}{2\pi (10m)}[/tex]
[tex]B = 2x10^{-5}T[/tex]
Hence, the strength of the magnetic field that the line produces is [tex]2x10^{-5} Tesla[/tex].
