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Five parallel wires carry currents into or out of the page, as shown in the diagram
below.
The line integral of B around the loop (in the direction indicated) is +µoI where
| = 1.0 A.
I,=4.0A
Iz=8.0A
L=1.0A
I=7.0A
?
Is
What is the unknown current I5?
OA.
8.0 A out of the page.
8.0 A into the page.
5.0 A into the page.
5.0 A out of the page.

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