Question

Each of the electrons in the beam of a television tube has a kinetic energy of 17.0 kev. The tube is oriented so that the electrons move horizontally from south to north. The vertical component of Earth's magnetic field points down and has a magnitude of 52.0 μT. In what direction will the electron beam deflect?

Answer 1

The electron beam in a television tube moving from south to north will deflect toward the west due to the downward vertical component of Earth's magnetic field acting on the negatively charged electrons.

Step-by-step explanation:

The question is about the deflection of an electron beam moving through Earth's magnetic field inside a television tube. Given that each electron has a kinetic energy of 17.0 keV and the beam moves horizontally from south to north, we must consider the vertical component of Earth's magnetic field, which points down and has a magnitude of 52.0 μT. According to the right-hand rule, the magnetic force will cause a deflection in the electron beam. Since the negative electron is moving from south to north and the vertical component of the magnetic field points downward, the resulting force will be oriented to the west, thus the beam will deflect in this direction.