Question

The ___________ uses electromagnetic fields to manipulate the direction of the electron beam, making it possible for the machine operator to control its path.

1) anode
2) deflection coil
3) focusing coil
4) cathode

Answer 1

The deflection coil is the device used to manipulate the direction of an electron beam in cathode ray tubes and similar technologies.

Step-by-step explanation:

The device that uses electromagnetic fields to manipulate the direction of the electron beam in devices such as cathode ray tubes (CRTs) is called a deflection coil. These coils are crucial in steering the accelerated electrons properly, allowing precision control over the beam's path. For example, in older televisions and computer monitors that use CRTs, two pairs of deflection coils are used. One pair controls the vertical deflection, and another pair controls the horizontal deflection. Similarly, other devices like electron microscopes and particle accelerators employ magnetic fields to direct and focus electron beams.