Two long, parallel wires separated by 4.5 cm carry currents in the same directions. The current in one wire is 3.25 A, and the current in the other is 4.5 A. (a) Find the magnitude of the force per unit length that one wire exerts on the other. 2.5 N/m 25 N/m 10.4 N/m 6.5 N/m (b) Is the force attractive or repulsive?

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Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.