Question

In a Coolidge tube, electrons strike the target and stop inside it. Does the target get more and more negatively charged as time passes?

Answer 1

In a Coolidge tube, electrons strike the target and stop inside it.

1. An electron emitted from the filament undergoes a number of collisions inside the material and loses its kinetic energy before coming to rest.

2. This energy is utilised to give out photons or eject electrons from the atoms of the target.

3. These electrons move to the battery connected to the circuit.

4. Thus, the target does not get more and more negatively charged as time passes.

Answer 2

Explanation:

• From the filament, the electron gets emitted. These electrons undergo a lot of collisions within the material and the kinetic energy is also lost before coming to the rest.
• The energy is used to eject electrons or give out photos from the target atoms.
• To the battery, the electrons move and stay connected to the circuit. So, there will not be more negatively charged target as the time goes on.