15 Questions
What term describes the apparent charge neutrality of a plasma overall?
Quasi-neutrality
What term is used to describe the transition between two plasma regions with different characteristics?
Double layer
Why are plasmas considered excellent conductors of electricity?
Due to neutralization of any charges that develop
What does the term 'quasineutrality' refer to?
Apparent charge neutrality of a plasma overall
What characteristic makes plasmas excellent conductors of electricity?
Readily neutralized charges
In the hydrodynamic model concept, what assumption is made about the fluctuations around the average values in a plasma?
They are negligible, leading to well centered average values
What is the primary reason plasmas are considered excellent conductors of electricity?
The abundance of free electrons and ions
What term is used to describe the state in which nearly all visible matter in the universe exists?
Plasma state
What is the condition that is generally released in laboratory plasmas, as mentioned in the text?
The negligible fluctuations around average values
What phenomenon or objects can plasmas exist in, as mentioned in the text?
All of the above
According to the single particle model, what law describes the motion of each particle?
Lorentz Force Law
What is the special case of drift often called in the context of the single particle model?
E X B (E-cross-B) Drift
In the frame moving with the drift velocity, what field vanishes according to the context of special relativity?
Electric Field
What happens to the curvature of a particle's orbit when it moves into a larger magnetic field?
It becomes tighter
What is the term used to describe the velocity needed for a charged particle to follow a curved field line?
Curvature Velocity
Test your knowledge about the Debye sheath, a layer in plasma with a greater density of positive ions and an overall excess positive charge. Learn about its thickness and characteristics in this quiz.
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