A circular cpper disc of 10 cm in diameter rotates at 1800 revolution per minute about an axis through its centre and at right angles to disc. A uniform field of induction B of `1Wb^(-2)m` is perpendicular to disc. What potential difference is developed between the axis of the disc and the rim?

A circular copper disc of 10 cm radius rotates at 20 pi radian//sec about an axis through its centre and perdendicular to the disc. A uniform magnetic field of 0.2 T acts perpendicular to the disc. Calculate the potential difference developed between axis of the disc and the rim. What is the induced current if resistance of disc is 2 ohm ?

A vertical copper disc of diameter 20cm makes 10 revolution per second about a horizontal axis passing through its centre. A uniforjm magnetic field 10^(-2)T acts perpendicular to the plane of the disc. Calculate the potential defference between its centre and rim in volts.

A vertical disc of diameter 10 cm makes 20 revolutions per second about a horizontal axis passing through its centre. A uniform magnetic field 10^(-1) T acts perpendicular to the plane of the disc. Calculate the potential difference between its centre and rim in volts.

The radius of of disc is 2 m the radius of gyration of disc about an axis passing through its diameter is

A circular copper disc of radius 25 cm is rotating about its own axis with a constant angular velocity of 130 rad//s . If a magnetic field of 5xx10^(-3) Tesla is applied at right angles to the disc, then the induced potential difference between the centre and the rim of the disc will approximately be __

A metallic circular disc having a circular hole at its centre rotates about an axis passing through its centre and perpendicular to its plane. When the disc is heated:

A metallic circular disc having a circular hole at its centre rotates about an axis passing through its centre and perpendicular to its plane. When the disc is heated:

The moment of inertia of a copper disc, rotating about an axis passing through its centre and perpendicular to its plane

If a circular concentric hole is made on a disc then about an axis passing through the centre of the disc and perpendicular to its plane