The two sets of magnetic-field coils,used to form the pictures on the screen, are _______ to each other.

Parallel or perpendicular

parallel

The two sets of magnetic-field coils, used to form the pictures on the screen, are

To determine whether the two sets of magnetic-field coils used to form the pictures on the screen are parallel or perpendicular to each other, we need to consider the configuration of the coils in relation to each other.

If the coils are arranged in such a way that their axes or lines of magnetic field are parallel to each other, then the coils are parallel. On the other hand, if the coils are set up in such a way that their axes or lines of magnetic field are at right angles to each other, then the coils are perpendicular.

To confirm the orientation of the coils, you may refer to the technical specifications or product documentation of the device in question. Alternatively, you can research the specific device or technology being discussed by using search engines, manufacturer websites, or consulting relevant scientific literature or academic resources.