A cylindrical conductor of radius $R$ is carrying a constant current. The plot of the magnitude of the magnetic field, $B$ with the distance $d$, from the centre of the conductor, is correctly represented by the figure$.....$
NEET 2019, Medium
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$B=\left\{\begin{array}{l}{\frac{\mu_{0}Id}{2 \pi R^{2}}: d \leq R} \\ {\frac{\mu_{0} I}{2 \pi d} d > R}\end{array}\right.$
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