A metal rod of resistance `R` is fixed along a diameter o fa conducting ring of radius `r` . There is a magnetic field of magnitude `B` perpendicular to the plane of the loop. The ring spins with an angular velocity `omega` about its axis. The centre of the ring is joined to its rim by an external wire `W` . The ring and `W` have no resistance. The current in `W` is

A metal rod of resistance 20 Omega is fixed along a diameter of a conducting ring of radius 0.1 m and lies on x-y plane. There is a magnetic field vec(B) = (50 T)vec(k) . The ring rotates with an angular velocity omega = 20rad s^(-1) about its axis. An external resistance of 10 Omega is connected across the center of the ring and rim. The current external resistance is

A metal rod of resistance 20 Omega is fixed along a diameter of a conducting ring of radius 0.1 m and lies on x-y plane. There is a magnetic field vec(B) = (50 T)vec(k) . The ring rotates with an angular velocity omega = 20rad s^(-1) about its axis. An external resistance of 10 Omega is connected across the center of the ring and rim. The current external resistance is

A metal rod of resistance 20 Omega is fixed along a diameter of a conducting ring of radius 0.1m and lies on x-y plane. There is a magnetic field B =(50T)hatk . The ring rotates with an angular velocity omega=20 rad //s about its axis. An external resistance of 10 Omega is connected across the centre of the ring and rim. The current through external resistance is

A ring of mass m and radius r is rotated in uniform magnetic field B which is perpendicular to the plane of the loop with constant angular velocity omega_(0) .Find the net ampere force on the ring and the tension developed in the ring if there is a current i in the ring.Current and rotation both are clockwise.

A ring of mass m and radius r is rotated in uniform magnetic field B which is perpendicular to the plane of the loop with constant angular velocity omega_(0) .Find the net ampere force on the ring and the tension developed in the ring if there is a current i in the ring.Current and rotation both are clockwise.

A conducting ring of radius r having charge q is rotating with angular velocity omega about its axes. Find the magnetic field at the centre of the ring.

A conducting ring of radius r having charge q is rotating with angular velocity omega about its axes. Find the magnetic field at the centre of the ring.

A conducting ring of radius r having charge q is rotating with angular velocity omega about its axes. Find the magnetic field at the centre of the ring.

A charge Q is spread uniformly over an insulated ring of radius R .What is the magnetic moment of the ring if it is rotated with an angluar velocity omega about its axis?