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What is meaning of npn transistor?

It can be used any where and it is preferred over PNP transistor because mobility of electron is much greater than hole.Some applications of NPN transistorsSwitchingamplification(audio amplifiers)In manufacturing of several ICs(including 741,and TTL(74 series)).


How does a capacitor store energy?

The energy stored in a capacitor is almost entirely in the electric field produced between the plates. It takes energy from a battery or some other power source to move electrons to one of the plates and away from the other. This makes one plate positively charged and the other negatively charged. Electric field is produced in proportion to the charge per unit area on a plate, and this electric field is said to originate on positive charges and terminate on negative charges. Energy stored in electric fields is proportional to the square of the electric field strength and the volume of the field. The energy is transferred from the power source to the electric field through the rearrangement of electrical charges.


What is the basic difference between electric spark and electric arc?

the time it duration for the action and voltage drop


What Distance between electric earth point out building?

how long distance of electric earth cable , between point or manhole ,what calculation to make good earthing in building how long distance of electric earth cable , between point or manhole ,what calculation to make good earthing in building how long distance of electric earth cable , between point or manhole ,what calculation to make good earthing in building


What is a good HVAC practice to help prevent electrostatic discharge?

Keep temperature between 70 and 74 degrees and humidity between 40 and 65 percent.

Related Questions

Lightning is an electric discharge between a positively charged area and?

It is not a rising of air mass, It is caused by an unbalance in the atmosphere; which an eletric discharge is taking place.Lightning is an electric discharge between a positively charged area and a negatively charged area.a rising air mass


What is an electric discharge tar occurs between a positively charged area and a negatively charged area?

An electric discharge is a flow of electric current between two charged areas that have a potential difference. This can happen when electrons move from the negatively charged area to the positively charged area, creating a brief burst of energy in the form of light or heat, such as lightning during a storm.


What is an electric attraction between positively and negatively charged ions in an ionic compound?

Ionic bond


Between which particles would an electric force of attration occur?

An electric force of attraction would occur between positively and negatively charged particles. Positively charged particles are attracted to negatively charged particles, according to the principle of opposites attract in electric forces.


What is excess of electric charge?

Excess electric charge refers to a situation where an object has more electric charge than it normally carries in a neutral state. This can occur through the transfer of electrons between objects, leading to an imbalance of positive and negative charges. Excess electric charge can cause objects to become negatively or positively charged and can result in electrical discharge if the imbalance is not resolved.


Between what do ionic bonds form?

it's a simultanious attraction between a positively charged ion and a negatively charged ion it's a simultanious attraction between a positively charged ion and a negatively charged ion


What role does induction play when lightning strikes earth?

Induction plays a key role in the process of lightning striking the Earth. Lightning is the result of an electrical discharge between the negatively charged base of a cloud and the positively charged surface of the Earth, which is induced by the separation of charges within the cloud through turbulent processes. This charge separation sets up an electric field that can lead to the discharge of lightning.


What is the attraction or repulsion of charges called?

The attraction or repulsion of charges is called electrostatic force. It arises due to the interaction between positively and negatively charged particles.


Which changes will decrease the electric force between two positively charged objects?

Increasing the distance between the objects, or decreasing the amount of charge on the objects will reduce the electric force between two positively charged objects. Adding negatively charged objects nearby can also reduce the electric force by attracting the positive charges.


How Electric charge created?

Electric charge is created when electrons are transferred between objects. This transfer of electrons can occur through friction, contact, or induction. When an object gains or loses electrons, it becomes positively or negatively charged, respectively.


What is the formation of positively and negatively charged objects?

Positively charged objects gain electrons to become negatively charged. Negatively charged objects lose electrons to become positively charged. This exchange of electrons creates an imbalance of positive and negative charges, leading to the attraction between the objects.


A diagram to illustrate what happens to the electrons in the clouds and on the ground during a lighting strom?

During a lightning storm, electrons move from the negatively charged clouds to the positively charged ground. This movement creates an electric current, which results in the visible lightning bolt we see. The discharge equalizes the charge between the clouds and the ground.