Two identical wires are horizontal and run parallel to eachother. They each carr

Question

Two identical wires are horizontal and run parallel to eachother. They each carry the same current, I. The top wire is held inplace by supports but the bottom wire floats suspended by magneticforces, 1.0 cm directly underneath the top wire. If the wires havea mass per unit length of 0.050 kg/m, find the magnitude andrelative direction of the currents in the wires. Ans: I = 157 A with samecurrent directions Two identical wires are horizontal and run parallel to eachother. They each carry the same current, I. The top wire is held inplace by supports but the bottom wire floats suspended by magneticforces, 1.0 cm directly underneath the top wire. If the wires havea mass per unit length of 0.050 kg/m, find the magnitude andrelative direction of the currents in the wires. Ans: I = 157 A with samecurrent directions

Explanation / Answer

from right hand rules the currents should be the same consider 1 meter 0*I2/2d=mg d=0.01 m m=0.05 kg per meter => I=157A

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