A metallic ring of radius a and resistance R is held fixed with its axis along a spatially uniform magnetic field whose magnitude is `B_(0)` sin `(omega t)`. Neglect gravity. Then,

A metallic coil of N turns of radius r, resistance R, and inductance L is held fixed with its axis along a spatial uniform magnetic field bar(B) whose magnitude is given by B_(0) sin(omegat) . Write the equation for the current i in the coil. given that B_(0)=1.00"tesla", N=10, r=10cm, omega=1000.0 rad s^(-1), R=10.0Omega, L-100,0mH .

A circular brass loop of radius a and resistance R is placed with it plane perpendicular to a magnetic field, which varies with time as B = B_(0) sin omega t . Obtain the expression for the induced current in the loop.

A horizontal ring of radius r spins about its axis with an angular velocity omega in a uniform vertical magnetic field of magnitude B . The emf induced in the ring is

A conducting ring of radius r and resistance R is placed in region of uniform time varying magnetic field B which is perpendicular to the plane of the ring. It the magnetic field is changing at a rate alpha , then the current induced in the ring is

A conducting ring of radius r and resistance R is placed in region of uniform time varying magnetic field B which is perpendicular to the plane of the ring. It the magnetic field is changing at a rate alpha , then the current induced in the ring is

A magnetic field in a certain region is given by B = B_(0) cos (omega t) hat k and a coil of radius a with resistance R is placed in the x-y plane with its centre at the origin in the magnetic field, Fig. Find the magnitude and the direction of the current at (a,0,0) at t = pi//2 omega, t = pi//omega and t = 3 pi//2 omega .

A magnetic field in a certain region is given by B = B_(0) cos (omega t) hat k and a coil of radius a with resistance R is placed in the x-y plane with its centre at the origin in the magnetic field, Fig. Find the magnitude and the direction of the current at (a,0,0) at t = pi//2 omega, t = pi//omega and t = 3 pi//2 omega .

A metal rod of resistance R is fixed along a diameter of a 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