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AP Physics 2
12.3 Magnetism and Current-Carrying Wires
IntermediateMCQMathematicalConceptual21k
Wire 2 suspended directly above fixed Wire 1
Wire 2 suspended directly above fixed Wire 1
A long, straight horizontal wire (Wire 1) is fixed in place and carries a current \(I_1\) to the right. A second long, straight horizontal wire (Wire 2), having mass per unit length \(\lambda\), is suspended in the air at a vertical distance \(d\) directly above Wire 1. Which of the following correctly identifies the required direction of the current \(I_2\) in Wire 2 and the expression for its magnitude so that Wire 2 remains suspended in magnetic equilibrium?

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