a copper disc of diameter `20 cm` makes `1200` r.p.m. about its natural axis kept parallel to a uniform magnetic field of `10^(-2)T`. The potential difference between the centre and edge of the disc is

A copper disc of radius 20cm makes 1200 revolution per minute about its axis which is parallel to a uniform magnetic field fo 0.01 tesla . Find the potential difference between the centre and the edge of the disc.

A copper disc of radius 10 cm rotates 20 times per scond with its axis parallel to a uniform magnetic field of 0.5 tesla . Calculate the induced emf between the centre and the edge 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—

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 copper disc of radius 0.1 m is rotated about its natural axis with 10 rps in a uniform magnetic field of 0.1 T with its plane perpendicular to the field, The emf induced across the radius of the disc is

A copper disc of radius 10 cm placed with its plane normal to a uniform magneic field completes 1,200 rotations per minute. If induced e.m.f. between the centre and edge of the disc in 6.284 m V, find the intensity of the magnetic field Take pi = 3.142

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.