Two long parallel wires separated by 300 cm carry currents, Ask an Expert

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Two long, parallel wires separated by 3.00 cm carry currents in opposite directions. The current in one wire is 1.20 A, and the current in the other is 3.15 A.

(a) Find the magnitude of the force per unit length that one wire exerts on the other. N/m

(b) Is the force attractive or repulsive?

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