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Two parallel wires that are 10 cm apart stick straight out of the screen, carrying a...

Two parallel wires that are 10 cm apart stick straight out of the screen, carrying a steady current.  A compass placed right between them points “North” straight up the screen, regardless of where the true North pole is.

The answer is .

The wire on YOUR right carries current in, the left one out.

but i dont understand why

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