A metallic disc of radius 10 cm is roatating uniforminty about a horizontal axis passing through its centre with angular velocity 10 revolution per second. A uniform magnetic field of intensity `10^-2` Tesla acts along the axis of the disc. Find the potential difference induced between the centre and the rim, of the disc.

A metallic disc of radius 10 cm is rotating uniformly about a horizontal axis passing through its centre with angular velocity 10 revolution per second. A uniform magnetic field of intensity 10^(-2)T acts along the axis of the disc. Find the potential difference induced between the centre and the rim of the disc.

A verticle copper disc of diameter 20 cm is rotating uniformly about a horizontal axis passing through its centre with angular speed 600 r.p.m. A uniform magnetic field of strength 10^-2T acts perpendicular to the plane of the disc. Calculate the potential difference between its centre and a point on the rim of the disc.

A copper disc of diameter 20 cm is rotating uniformly about its horizontal axis passing through the centre with angular frequency 600 rpm. A uniform magnetic field of strength 10^(-2)T acts perpendicular to the plane of the disc. Calculate the induced emf between its centre and a point on the rim of the disc.

A circular metalic disc of radius a is rotating with a uniform angular velocity (w) perpendicularly to the uniform magnetic field vecB . The potential difference between the centre and the rim of the disc is—

Radius of gyration of a disc of mass 50 g and radius 0.5 cm about an axis passing through its centre of gravity and perpendicular to the plane is

A 1.0 m long metallic rod is rotated with an angular velocity of 400 rad. s^(-1) about an axis normal to the rod passing through its one end. The other end of the rod is in contact with a circular metallic ring. A constant and uniform magnetic field of 0.5 T parallel to the axis exists everywhere. Calculate the emf developed between the centre and the ring.