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When an electric current flows though a long conductor each free electron moves?
Wiki User
∙ 11y ago
Only a very tiny fraction of an inch before scattering off another electron or atom. This scattering distance is independent of wire length.
Wiki User
∙ 8y ago
Wiki User
∙ 11y agothrough a relatively short distance.
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What is a electrical curcuit?
An electric circuit is a path in which electrons from a voltage or current source flow. Electric current flows in a closed path called an electric circuit. Its so simple, though my friend from extraminds help me with proper answer.
Why silver is not used for making electrical wires?
Even though silver is the best conductor of electricity, it is extremely expensive. Thus silver is not used to make electical wires. Silver is also very soft to be used as electric wires.
What is the purpose of grounding electrical equipment?
It is a safety measure for devices that have a metal case where a failure in the device could cause the case to be connected to the hot side of the circuit. By grounding the case the breaker will trip instead of you getting a shock.
No load current of transformer is non sinusoidal even though sinusoidal voltage is provided in oc sc test?
eddy current loss in the transformer core is reduced by
What is hole current?
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 answerfirst lets look at what is holehole: 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 holehole 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 does an electric current not flow easily though?
A poor conductor, like iron or steel.
Why does graphite conduct electric current though it is a non metal?
it doesnot depend on meta l or non metal it depends on valence electron ........
Why does graphite conduct electric current though it is a non-metals?
it doesnot depend on meta l or non metal it depends on valence electron ........
Is electric press a conductor or insulator?
Whether a material is a conductor or an insulator depends on its ability to conduct electric current. An electric conductor is a material that allows the flow of electric charge. In conductors, electrons are loosely bound and can move easily, facilitating the flow of electric current. Common examples of conductors include metals like copper and aluminum. On the other hand, an insulator is a material that does not allow the flow of electric charge. Insulators have tightly bound electrons, and they do not conduct electricity well. Examples of insulators include rubber, glass, and most non-metallic materials. In the context of an electric press, it's important to note that the press itself is typically made of metal, which is a conductor. However, the material being pressed could be either a conductor or an insulator depending on its properties. If the material being pressed is an insulator, it won't conduct electricity well, even though the press itself is a conductor.
How do electrical currents pass through?
The prevailing theory is that the atoms in the conductor share electrons, and they seem to move around at random in the conductor material. When a voltage is applied across the conductor, the electrons tend to move in that direction, but they are still pretty random. This average trend is what we measure as current.
If an electric current can travel though two paths which will it travel though?
Both
When electric current flows through a metal wire?
current flows through the conductor due to the motion of the free charge carriers present in it. The more charge carriers present in the conductor, the more current flow through that conductor. No free carriers present in the insulator and hence no current flows through insulator. thus..free charge carriers causes the current flows through the conductor.
Name the charge responsible for current flow?
it is electron because there are free electrons in a conductor .The atoms are fixed on their places.The positive ion (as a result of emission of an electron which is negatively charged ) remains still on its place and hence the free electrons are responsible for the current flow . In solutions and gases the positive ions can also move because they are free to move unlike in the metal
Explain why current is not a vector though it appears to posses a direction?
Its direction is wherever the conductor goes. Once the conductor is configured, the current has only two choices ... forward or backward, denoted by positive or negative current.
What is the flow of electricity charge?
it is the rate at which electric charges pass though a conductor. The charged particle can be either positive or negative. In order for a charge to flow, it needs a push (a force) and it is supplied by voltage, or potential difference. The charge flows from high potential energy to low potential energy.
Can an electric current move in two directions at once?
Not simultaneously. Though it can alternate. If you mean in one circuit there can be alternative directions in which the current can move. Electrical currents go from the negative to the positive since electron (electricity is a lot of electrons) is negative so is directed to the positive.
When there is no current passing through a conductor you say magnetic field is zero but in a conductor charges are in motion then why is there no magnetic field?
When there is no current passing through a conductor, charges are stilll in motion, but they are disorganized and not flowing. The magnetic fields by all of those random movements cancel each other out. That is why there is no magnetic field in a conductor with no current, even though there is movement in the charges.
