Magnetic Effects of Current and Magnetism: JEE Main 2019 Physics question

JEE Main 2019 · 10 Jan, Morning shift · Q7721

JEE Main 201910 Jan, Morning shiftPhysicsMediumMagnetic Effects of Current and Magnetism165× since 2002

An insulating thin rod of length

l

has a linear charge density

\rho \left( x \right)

{\rho _0}{x \over l}

on it. The rod is rotated about an axis passing through the origin (x = 0) and perpendicular to the rod. If the rod makes n rotations per second, then the time averaged magnetic moment of the rod is -

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JEE Main 2019 Magnetic Effects of Current and Magnetism Question with Solution (10 Jan Morning shift, Q7721) | JEE Arc