A closed loop of B is produced by a changing electric field. Does it necessary mean that E and `dE//dt` are non-zero at all points on the loop and in the area enclosed by the loop?

A closed lop of B is produced by a changing electric field l.Does it necessarily mean that (dB)//(dt) are non - zero at all the points on the loop and in the area enclosed by the loop?

Supose a gaussian surface does not include any net charge. Does it necessarily mean that E is equal to zero for all points on the surface?

If you find closed loops of B in a region in space, does it necessarily mean that actual charges are flowing across the area bounded by the loops?

A closed conducting loop moves normal to the electric field between the plates of a large capacitor. Is a current induced in the loop, when it is wholly inside the capacitor. The electric field is nromal to the plane of the loop.

Find the electric field intensity at any point on the axis of a uniformly charged ring or loop.

A crcular loop of charge is placed in YZ-plane with its centre at the origin. Find expression for electric field at a point on X-axis.

A rectangular loop of area A, having N turns and carrying a current of I ampere is held in a uniform magnetic field B. Write down the expression for the maximum torque experiened by the loop.

Figure 6.20 shows a metal rod PQ resting on the smooth rails AB and positioned between the poles of a permanent magnet. The rails, the rod, and the magnetic field are in three mutual perpendicular directions. A galvanometer G connects the rails through a switch K. Length of the rod =15 cm, B = 0.50 T, resistance of the closed loop containing the rod = 9.0 mOmega Assume the field to be uniform. With K open and the rod moving uniformly, there is no net force on the electrons in the rod PQ even though they do experience magnetic force due to the motion of the rod. Explain. :