A long circular tube of length 10 m and radius 0.3 m carries a current I along its curved surface as shown. A wire-loop of resistance 0.005 ohm and of radius 0.1 m is placed inside the tube with its axis coinciding with the axis of the tube. The current varies as I=I0cos(300t) where I0 is constant. If the magnetic moment of the loop is Nμ0I0sin(300t), then ′N′ is

A long circular tube of length 10 m and radius 0.3 m carries a current

1.	A long circular tube of length 10 m and radius 0.3 m carries a current I along its curved surface as shown. A wire-loop of resistance 0.005 ohm and of radius 0.1 m is placed inside the tube with its axis coinciding with the axis of the tube. The current varies as I=I0cos(300t) where I0 is constant. If the magnetic moment of the loop is Nμ0I0sin(300t), then ′N′ is
Answer» A long circular tube of length 10 $m$ and radius 0.3 $m$ carries a current $I$ along its curved surface as shown. A wire-loop of resistance 0.005 ohm and of radius 0.1 $m$ is placed inside the tube with its axis coinciding with the axis of the tube. The current varies as $I = I_{0} cos (300 t)$ where $I_{0}$ is constant. If the magnetic moment of the loop is $N μ_{0} I_{0} sin (300 t),$ then $^{'} N^{'}$ is

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