What is the magnetic field strength at point a? Express your answer to two significant figures and include the appropriate units.

Complete Question

The diagram for this question is shown on the first uploaded image

The value  is

Explanation:

From the diagram we see that

  The distance  of the magnetic field generated by first wire to point a is

   The distance  of the magnetic field generated by second wire to point a is  

Let the current passing through both wire be

Generally the the magnetic field strength at point a is mathematically represented as

=>    

Generally   is the permeability of free space with value

=>    

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