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 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 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 0.1 m rotates about its centre with 10 revolutuion per second in a uniform magnetic field of 0.1 tesla. The emf induced across the radius of the disc is

A copper disc of radius 0.1 m rotates about its centre with 10 revolution per second in 'a uniform magnetic field of 0.1 T. The emf induced across the radius of the disc is -

A circular disc of radius 20 cm is rotating with a constant angular speed of 2.0 rad//s in a uniform magnetic field of 0.2 T. Find the e.m.f. induced between the centre and rim of the disc. Given magnetic field is along the axis of rotation of disc.

A copper disc of radius 0.1 m rotates about its centre with 10 revolutuion per second in a uniform magnetic field of 0.1 tesla with its plane perpendicular to the field. The emf induced across the radius of the disc is

A copper disc of radius 0.1 m is rotated about its centre with 20 revolution per second 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 0.1 m is roated about its centre with 20 revolutions per second in a uniform magnetic field of 0.1 T with its plane perpendicular the field. The emf induced across the radius of disc is