JEE MainPhysicsModerateMagnetic effect of current

Consider a circular coil of wire carrying constant current I,
forming a magnetic dipole. The magnetic flux through an infinite plane
that contains the circular coil and excluding the circular coil area is
given by $\phi_{i}$ .The magnetic flux through the area of the circular
coil area is given by $\phi_{0}$ . Which of the following optionis
correct?

Show answer and solution

As magnetic field lines always form a closed loop, hence every
magnetic field line creating magnetic flux in the inner region must be
passing through the outer region. Since flux in two regions are in
opposite direction,

\therefore

\phi_{i} = - \phi_{0}

Source: Grass-G / P-13 Physics paper 4 Nov.docx

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