A circular wire of radius r rotates about its own axis with angular speed w in a magnetic field B perpendicular to its plane, then the induced e.m.f. is

A conducting wire of length l is rotating with angular velocity w in a magnetic field B perpendicular to it. Prove that the induced e.m.f. at the two ends of the conducting wire is e = 1/2 Bwl^2 .

A wheel having n conducting concentric spokes is rotating about it geometrical axis with an angular velocity omega , in a uniform magnetic field B perpendicular to its plane prove that the induced emf generated between the rim of the wheel and the center is (omegaBR^2)/2 , where R is the radius of the wheel. It is given that the rim of the wheel is conducting.

A conducting circular loop of radius r is rotated about its diameter at a constant angular velocity omega in a magnetic field B perpendicular to the axis of rotation. In what position of the loop is the induced emf zero?

A conducting circular loop of radius r is rotated about its diameter at a constant angular velocity omega in a magnetic field B perpendicular to the axis of rotation. In what position of the loop is the induced emf zero?

A conducting circular loop of raidus r is rotated about its diameter at a constant angular velocity omega in a magnetic field B perpendicular to the axis of rotation. In what position of the loop is the inducedj emf zero?

A wire is bent to form a semi-circle of radius a. the wire rotates about its one end with angular velocity omega .Axis of rotation being perpendicular to plane of the semicircle . In the space , a uniform magnetic field of induction B exists along the axis of rotation as shown . The correct statement is :

A wire is bent to form a semi-circle of radius a. The wire rotates about its one end with angular velocity omega . Axis of rotation being perpendicular to plane of the semicircle. In the space, a uniform magnetic field of induction exists along the axis of rotation as shown. The correct statement is

A wire is bent to form a semi-circle of radius a. The wire rotates about its one end with angular velocity omega . Axis of rotation being perpendicular to plane of the semicircle. In the space, a uniform magnetic field of induction exists along the axis of rotation as shown. The correct statement is

A wire is bent to form a semicircle of the radius a. The wire rotates about its one end with angular velocity omega . Axis of rotation is perpendicular to the plane of the semicircle . In the space , a uniform magnetic field of induction B exists along the aixs of rotation as shown in the figure . Then -

A solid cylinder of mass M and radius R rotates about its axis with angular speed omega . Its rotational kinetic energy is