This course has images and animations to explain current flow through vacuum or gases at low pressure , such as in cathode ray tubes etc.
Following topics are covered:
1) Electric Discharge through gases at low pressure
2) Paschen’s Law for minimum Sparking Voltage in a discharge tube
3) Cathode Rays
4) Properties of Cathode Rays
5) Thermionic Emission and Work Function for a metal
Course Features
- Lectures 11
- Quiz 0
- Duration Lifetime access
- Skill level All levels
- Language English
- Students 107
- Certificate No
- Assessments Yes
- 1 Section
- 11 Lessons
- Lifetime
Expand all sectionsCollapse all sections
- Lessons Included11
- 1.1Electric discharge through gases at Low pressure
- 1.2Paschen’s Law — Sparking potential ‘V’
- 1.3Cathode Rays
- 1.4Properties of Cathode Rays
- 1.5THOMSON EXPERIMENT – Discovery of electron and its properties
- 1.6Electron’s e/m ratio (charge/mass ratio) – discovered by j.J.Thomson
- 1.7Thermionic Emission and Work Function
- 1.8Richardson-Dushman Equation for Thermionic Emission
- 1.9Diode valve
- 1.10Solved problems
- 1.11Interactive Test – multiple choice
