A metal disc of radius R rotates with an angular velcoity `omega` about an axis perpendiclar to its plane passing through its centre in a magnetic field B acting perpendicular to the plane of the disc. Calculate the induced emf between the rim and the axis of the disc.

In a Faraday disc dynamo, a metal disc of radius R rotates with an angular velocity about an axis perpendicular to the plane of the disc and passing through its centre.The disc is placed in a magnetic field B acting perpendicular to the plane of the disc.Determine the induced emf between the rim and the axis of the disc.

Radius of gyration of disc rotating about an axis perpendicular to its plane passing through its centre is (If R is the radius of disc)

Radius of gyration of disc rotating about an axis perpendicular to its plane passing through through its centre is (If R is the radius of disc)

Obtain an expression for radius of gyration about an axis passing through the centre of a uniform disc and perpendicular to the plane of the disc.

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.

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.

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 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.