Problem C12: Initially the current in a straight wire that is infinite in length is I₀ (see left diagram above). The magnetic field vector a distance d from the wire is B₀. Then the current is changed to n₁I₀ (see right diagram above). What is the magnetic field vector at a position that is n₂d directly away from the wire? If the magnetic field vector is n₃B₀, what is n₃?

n1 =	n2 =	Input n3:

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Problem: