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 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 `Nmu_(0)I_(0) sin (300 t)`, then 'N' is

Answer

6