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There are two type of carriers in any semiconductor. For a given sample, these carriers have a specific concentration and mobility. The current flow due to the holes carriers in any semiconductor is the hole current.
Answer'Holes' are imaginary positive, mobile, charge carriers used as a model to represent the behaviour of electric current in p-type semiconducting material. A 'model' is simply a means of explaining complex behavior in terms of something we can easily understand or picture in our minds. In reality, therefore, holes do not exist, but offer a convenient way of explaining current flow in semiconductors in an understandable way.A 'hole' is simply a vacant position, formally occupied by an electron, rather than a real entity. As electrons move in one direction, relative to those electrons, these imaginary holes behave as though they move in the opposite direction (in rather the same way that scenery seems to be moving backwards when you look from a train whereas, in reality, it's the train that's moving forward!). So, as electrons move from negative to positive, holes appear as though the electrons are actually stationary and it's the holes that are moving from positive to negative.
So it's convenient to think of current flow through 'p-type' material, in particular. in terms of imaginary holes moving in the opposite direction to electron flow.
(You see a similar effect with led message boards. The message is formed by bright led dots that appear to move in one direction; but you can also argue that the message is formed by the unilluminated leds that appear to move in the opposite direction! You can think of the illuminated leds as electron flow and the unilluminated leds as hole flow.)
Diouly-dcp's answer
first lets look at what is hole
hole: is when an external voltage source of energy acquire to a piece of silicon or other,it allows the valence electrons to thermally jump from the valence bond to the conduction bond, when they moved, a vacancy is left. this vacancy is called hole
hole current: another type of current occurs at the valence level where the holes created by the free electron exist. Electrons remaining in the Valence Bond are still attached to their atoms and are not free to move randomly in the crystal structure as are the free electron, however a valence electron can move into a near by whole with little change in it's energy level thus leaving another hole where it came from. effectively the hole has more from one place to another in the crystal structure, this is called hole current.
(electrons in the valence bond are moving from one hole to another in the valence bond it self, but not to the conduction bond)
What else can I help you with?
What are convection currents associated with electricity?
Convection current is current that is produced when a conductor induces a current in another conductor, and that other conductor is shorted. An example would be a conductor going through a hole in a metal panel. The hole represents a one-turn transformer that is shorted. Convection current (or eddy current) represents a loss of power and it creates heat. To avoid this, you either cut a slot in the panel to the hole, breaking the circuit, or you pass symmetrically opposed or balanced conductors through the same hole. This is also why transformers are made with stacked plates, plates that are insulated from each other, and that individually do not create a circuit.
Is IGBT the bipolar device?
IGBT and BJT are bipolar devices as the name suggest. Meaning of bipolar device both electrons and holes leads to current unlike FET where either electron or hole causes current.
What are the precaution before using a multimeter dc voltmeter and dc ammeter?
Make sure the the Leeds are inserted in the right hole. Make sure that the meter is set to the range of voltage or current you expect
What is base transport factor?
It is the fraction of minority carriers injected into the base of a BJT that successfully diffuse across the quasineutral width of the base and enter the collector. Ideally, it should be as close to 1 as possible, for maximum amplification. It is usually represented by alpha_T. alpha_T = I_C/I_E, where I_C is collector current, and I_E is emitter current. For an NPN transistor I_C and I_E are electron current, where as for a PNP they are hole currents.
What is the hole size required for a 2.5 conduit?
A trade size hole for a 2-1/2" EMT conduit connector, the hole needs to be 2-7/8" in diameter. A 3" rigid conduit can also use this size hole without the lock nuts falling into the hole.
Where is current hole in ozone layer?
Over the Southern and Northern poles.
What is need to study about hole curren when there is actually electron current which is involved?
actually it is the holes which lead to the movement of the electron,as electron moves to the hole's place creating a hole behind.
How to create a black hole?
Creating a black hole is not currently possible with our current technology and understanding of physics. Black holes are formed from the collapse of massive stars, and the conditions required for their creation are extreme and beyond our current capabilities.
What are convection currents associated with electricity?
Convection current is current that is produced when a conductor induces a current in another conductor, and that other conductor is shorted. An example would be a conductor going through a hole in a metal panel. The hole represents a one-turn transformer that is shorted. Convection current (or eddy current) represents a loss of power and it creates heat. To avoid this, you either cut a slot in the panel to the hole, breaking the circuit, or you pass symmetrically opposed or balanced conductors through the same hole. This is also why transformers are made with stacked plates, plates that are insulated from each other, and that individually do not create a circuit.
Does a black hole ever get full?
According to current theory, a black hole, if it exists, begins its life full,and nothing that falls into it ever leaves it.
How expensive is it to explore a black hole?
If by "explore" you mean to actually go there, near the black hole, that simply isn't possible with current technology. The nearest known black hole is at a distance of 3000 light-years.
Why npn is preferred over pnp?
Mostly electron current carriers are more mobile than hole current carriers, resulting in a faster transistor.
Is the batter in the hole or hold?
In baseball, the term "in the hole" refers to the batter who is next to bat after the current batter, while "on deck" refers to the batter who is immediately next in the batting order. "In the hole" indicates that the player is waiting for their turn but is not yet at the plate. Therefore, if you're asking if the batter is "in the hole," it means they are next after the current batter. If the question is about whether the batter is "holding," that term is not typically used in this context.
Does hole exists practically in conduction of current?
A hole is a place where an electron is missing. Such places exist; and for practical purposes, it is convenient to think of them as independent positive charge carriers.
Does every black hole contain a singularity within its core?
Yes, according to current scientific understanding, every black hole is believed to contain a singularity at its core.
How does a worn out bearing does affect d current of a governing set?
a worn out bearing affects the current in a governing set because it creats a hole hence discontinuity.
How can I enlarge a hole in wood?
To enlarge a hole in wood, you can use a drill with a larger bit size than the current hole. Simply place the drill bit in the existing hole and drill in a clockwise motion until the hole is the desired size. Be sure to secure the wood properly to prevent any movement while drilling.
