Atomic Theory Chem (DH) 2025 – 400 Free Practice Questions to Pass the Exam

The flow in a cathode-ray tube consists of electrons moving from the cathode to the anode. This occurs because the cathode is negatively charged, while the anode is positively charged, creating an electric field that directs the electrons towards the anode. As these electrons are emitted from the cathode, they travel in straight lines through a vacuum within the tube, striking the anode and producing various effects such as light emissions on a phosphorescent screen or triggering other reactions.

The behavior of cathode rays as streams of electrons was a pivotal discovery in the field of atomic theory, significantly contributing to our understanding of atomic structure and the nature of electric charge. In summary, the correct description of the flow in a cathode-ray tube accurately reflects the fundamental principles of electricity and atomic particles, specifically the behavior of electrons within an electric field.