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Figure shows two current segments.In th...

Figure shows two current segments.In the upper segment,an arc of radius 4cm subtends an angle of `120^(@)` with center P.The lower segment includes a large semicircle of radius "5cm" also with centre P.If I=0.4amp in both.If the net magnetic field at point "P" due to these current segments is `(pi x)/(30)mu T` then find the value of x.

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