Dear Student, The magnetic field induction can vanish in the region 1 & 3 If y and x are the distance of the point where the magnetic induction is zero from the conductors carrying current I1 and I2 thenμo4π×2I1y=μo4π×2I2xy=I1I2xcomparing with equation,y=mx+cso, c=0m=I1I2It is an equation of a straight line with slope I1I2 passing through origin Regards

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Dear Student,

The magnetic field induction can vanish in the region 1 & 3 . If y and x are the distance of the point where the magnetic induction is zero from the conductors carrying current I_{1} and I_{2} then \frac{μ_{o}}{4 π} \times \frac{2 I_{1}}{y} = \frac{μ_{o}}{4 π} \times \frac{2 I_{2}}{x} y = (\frac{I_{1}}{I_{2}}) x comparing with equation, y = mx + c so, c = 0 m = (\frac{I_{1}}{I_{2}}) It is an equation of a straight line with slope (\frac{I_{1}}{I_{2}}) passing through origin .

Regards

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