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Two power lines run parallel for a distance of 248 m and are separated by a...

Two power lines run parallel for a distance of 248 m and are separated by a distance of 40.0 cm. If the current in each of the two lines is 120 A and if they run in opposite directions, determine the magnitude and direction of the force each wire exerts on the other.
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Answer #1

For the force on each other

force on each other = u0 * I1 * I2* L/(2pi * d)

force on each other = 4pi * 10^-7 * 120 * 120 * 248/(2pi * 0.40)

force on each other = 1.78 N

the force on both wire is 1.78 N

the direction of current is opposite , the force is away from each other

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