Charge is sprayed onto a large non conducting belt above the left hand roller. The belt carries charge with a uniform surface charge density delta, as it moves with a speed v between the rollers as shown. The charge is removed by a wiper at right hand roller. For a point just above the sheet mark the correct option.

Charge is sprayed onto a large non-conducting belt above the left-hand roller in Fig. The belt carries the charge, with a uniform surface charge density s, as it moves with a speed v between the rollers as shown in the figure. The charge is removed by a wiper at the right-hand roller. Consider a point just above the surface on the moving belt. Find an expression for the magnitude of magnetic field at this point.

Charge is sprayed onto a large non-conducting belt above the left-hand roller in Fig. The belt carries the charge, with a uniform surface charge density s, as it moves with a speed v between the rollers as shown in the figure. The charge is removed by a wiper at the right-hand roller. Consider a point just above the surface on the moving belt. Find an expression for the magnitude of magnetic field at this point.

A large plate with uniform surface charge density sigma is moving with constant speed v as shown in the figure. The magnetic field at a small distance from plate is

Two infinite non-conducting sheets each with uniform surface charge density sigma are kept in such a way that the angle between them is 30^(@). The electric field in the region I shown between them is

Two infinite, non-conducting sheets of charge are parallel to each other, as shown in figure. The sheet on the left has a uniform surface charge density sigma , and the one on the right has a uniform charge density -sigma . Calculate the electric field at points (a) to the left of, (b) in between, and (c) to the right of the two sheets.

Two infinite, non-conducting sheets of charge are parallel to each other, as shown in figure. The sheet on the left has a uniform surface charge density sigma , and the one on the right has a uniform charge density -sigma . Calculate the electric field at points (a) to the left of, (b) in between, and (c) to the right of the two sheets.

Three non-conducting large parallel plates have surface charge densities sigma, -2 sigma and 4 sigma respectively as shown in the figure. The electric field at the point P is

Three non-conducting large parallel plates have surface charge densities sigma, -2 sigma and 4 sigma respectively as shown in the figure. The electric field at the point P is

Two large flat parallel sheets A and B having uniform surface charge densities sigma and -sigma are held as shown in the figure graphically, represent the variation of electric field due to the two sheets as one move from the point O to P.