Sir,
Kindly answer my question......
The question is as follows:-
Q. "3 wires of radius 'R' each are placed mutually perpendicular to each other according to the the coordinate axes orientation with a common center, i.e., the origin.
If each wire has current 'I 'flowing through it , then find the net magnetic field at the centre,i.e. the origin."


Dear Student,
                        As we know the magnetic field at the  centre of a loop( circular), B = μoI2R
           Now here the total magnetic field at the center will be due to the 3 loops,
​                                                                  
                                       B=B1+B2+B3  =μoI2R i^  + μoI2R j^+μoI2R k^  =μoI2R( i^+j^+k^)So, magnitude of total magnetic field.   B=μoI2R12+12+12        =3μoI2R 
Regards

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