JEE MAIN - Physics (2022 - 28th June Morning Shift - No. 10)
An infinitely long hollow conducting cylinder with radius R carries a uniform current along its surface.
Choose the correct representation of magnetic field (B) as a function of radial distance (r) from the axis of cylinder.
_28th_June_Morning_Shift_en_10_1.png)
_28th_June_Morning_Shift_en_10_2.png)
_28th_June_Morning_Shift_en_10_3.png)
_28th_June_Morning_Shift_en_10_4.png)
Explanation
Inside a hollow cylindrical conductor with uniform current distribution net magnetic field is zero in hollow space.
But outside the cylindrical conductor $$B \propto {1 \over r}$$
$$\Rightarrow$$ Graph in option D would be a correct one
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