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What do youactually mean by energy supplied by electric discharge?

What do youactually mean by energy supplied by electric discharge?

Grade:11

1 Answers

Bhavya
askIITians Faculty 1281 Points
8 years ago
Electric dischargedescribes any flow of electric charge through a gas, liquid or solid.There are different types of electric discharge like brush discharge, electric discharge of gases, corona discharge etc.Electric discharge in gasesoccurs whenelectric currentflows through agaseousmedium due to ionisation of the gas. Depending on several factors, the discharge may radiate visible light.Light is often produced when an electric current passes through a gas. We see a burst of this light in the sparks of static electricity or lightning.Several types of lamps produce light by establishing a permanent electric arc in a gas. This process is known as electric discharge, or gaseous discharge. It is the process used to produce light in fluorescent and high intensity discharge lamps.

Anelectrical dischargeresults from the creation of a conducting path between two points of different electrical potential in the medium in which the points are immersed. If the supply of electrical charge is continuous, the discharge is permanent, but otherwise it is temporary, and serves to equalize the potentials. Usually, the medium is a gas, often the atmosphere, and the potential difference is a large one, from a few hundred volts to millions of volts. If the two points are separated by a vacuum, there can be no discharge. The transfer of matter between the two points is necessary, since only matter can carry electric charge. This matter is usually electrons, each carrying a charge of 4.803 x 10-10esu. Electrons are very light, 9.109 x 10-28g, and so can be moved with little effort. However, ions can also carry charge, although they are more than 1836 times heavier, and sometimes are important carriers. Where both electrons and ions are available, however, the electrons carry the majority of the current. Ions can be positively or negatively charged, usually positively, and carry small multiples of the electronic charge.The two termini of a discharge are at different potentials. The higher, or positive, potential is at theanode, while the lower, or negative, potential is at thecathode.

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