A 2.50-m segment of wire carries 1000 A current and feels a 4.00-N repulsive force from a parallel wire 5.00 cm away. What is the magnitude of the current in the other wire

The current is  

Explanation:

From the question we are told that

    The  length of the segment is  

     The current is  

     The force felt is  

        The distance of the second wire is  

Generally the current on the second wire is mathematically represented as

Here   is the permeability of free space with value  

=>      

=>      

iron would move it is magnetic there is a mag field around the current in the wire

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