Question

Write a short note on plasma(a state of matter)

Answer 1

Answer:

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Explanation:

Definition. Plasma is a state of matter in which an ionized gaseous substance becomes highly electrically conductive to the point that long-range electric and magnetic fields dominate the behaviour of the matter. The plasma state can be contrasted with the other states: solid, liquid, and gas.

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Answer 2

Answer---☑

✦ A plasma is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of plasmas are significantly different from those of ordinary neutral gases so that plasmas are considered a distinct "fourth state of matter." For example, because plasmas are made up of electrically charged particles, they are strongly influenced by electric and magnetic fields (see figure) while neutral gases are not. An example of such influence is the trapping of energetic charged particles along geomagnetic field lines to form the Van Allen radiation belts.

✧ In addition to externally imposed

fields, such as the Earth's magnetic

field or the interplanetary magnetic

field, the plasma is acted upon by

electric and magnetic fields created

within the plasma itself

througlocalized charge

concentrations and electric

currents that result from the

differential motion of the ions and

electrons. The forces exerted by

these fields on the charged

particles that make up the plasma

act over long distances and impart

to the particles' behavior a

coherent, collective quality that

neutral gases do not display

(Despite the existence of localized

charge concentrations and electric

potentials, a plasma is electrically

"quasi-neutral," because, in

aggregate, there are approximately

equal numbers of positively and

negatively charged particles

distributed so that their charges

cancel.)