Question #1758

Two wires of same length are placed parallel to each other at a distance of 0.65 metres from each other.<br>Calculate the ratio of the force they exert on each other assuming 10 amperes current in the first wire and 5 amperes in the second wire

Expert's answer

Denote the current in the first wire as I_{1} (10 amperes) and the current in the second wire as I_{2} (5 amperes).

The force that act at the unit length is

**F**_{u}=μ_{0}/4π (2I_{1} I_{2})/r=10^{-7} *2*10*5 / 0.65=153.84*10^{-7} N.

The force that act at the unit length is

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