How to find Ionization potential of Mercury in Physics Lab


Ionization Potential of Mercury

The ionization potential of mercury is discussed with an experimental apparatus. How to find out the ionization potential of mercury. The electrons from the heated surface of cathode emit and reach up to the plate which is at the higher potential, so all the electrons are attracted by the plate….but due to space charge, all the emitted electrons cannot reach up to the plate…

Procedure Mercury Ionization

now we increase the potential of the plate as a result electron get accelerated and ionize the mercury vapor. The mercury ion move towards the cathode and neutral the space charge….also the electrons release from ionization of mercury reach up to the plate in addition to the electrons emitted from the cathode and as a result current increase suddenly. this is the point of ionization potential. One can find out it by plotting the graph in between the plate current and applied voltage.


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Dr Sushil Kumar

Dr. Sushil Kumar, a physicist, an eminent researcher and a teacher for the benefit of students and fellow physicists alike. Apni Physics is an effort to create a better platform and also to help the students to be able to have content at their hands whenever they want, online. Dr. Sushil continues to upload his lectures and post articles about latest researches in physics, academic, physics education, and also lessons about daily life and how physics define every aspect of our everyday movement and life.

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