Question

A current of 30 mA flows in a conducting wire on a z-axis towards positive direction and three cylindrical coaxial current sheets with diameters 5 cm, 3 cm and 2 cm carry current densities -60mA/m, -50mA/m and 40 mA respectively in the same direction. Calculate magnetic field intensity at diameter 4 cm. 0.48 nT 1.76 nT 1.62 nT 1.16 nT
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