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How many electrons pass through a conductor in 1 min and 30s if the current is 4mA?
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Why do electrons flow through a wire?
An electrical current is simply the flow of free electrons in and on the conductors. So they are a bit like water molecules in a garden hose. And like those water molecules the flow of free electrons can be physically impeded by whatever is in or on the electrical conductor. When a material is a good conductor, the atoms and molecules of that good conductor do not get in the way of the free electrons. They do not resist the flow of those electrons very much. So even with just a low voltage to push the electrons along, the flow, the current of the electrons is high. But when a material is a bod conductor, the atoms and molecules of that bad conductor do physically get in the way of those free electrons so that they cannot flow freely through the conductor. The resistance is high in a poor conductor. So it takes a relatively higher voltage to push electrons along in a bad conductor...if indeed they can be pushed at all. Some materials are so bad at conducting it's almost impossible to move those electrons along.
Electricity is the flow of which subatomic particles?
Electricity is the flow of electrons across a conductor. A conductor can be many things, copper is one of the most efficient. Voltage is what moves the electrons. It works like the pressure that pushes water through a hose.
Materials with many free electrons are considered what?
Electrical Conductor
How many electrons pass through an electric bulb in one minute if 300 A current is passing through?
300A means that 300 coulombs of electrons are passing through it per second. 300 coulombs is (1.87 * 10^19) electrons, or simple 300C of electrons.
Why is silver a good thermal conductor?
Silver is a good thermal conductor as it's a metallic element with many free electrons available for heat transfer.
What happens to metals as they conduct electricity?
The electrons in a conductor will support the movement of electric current. A conductor is defined as a material with a number of electrons in its makeup that are actually in what is called the conduction band. The conduction band is an energy level where electrons must be to permit conduction in a material. If the minimum energy in the conduction band in a material is such that a lot of electrons in that material are already at or above that level, then these electrons will be available to support current flow. Remember that electron current flow is moving electrons, and it is not about sending an electron into a conductor, like a wire, at one end and getting that same electron out at the other. It is about sending a bunch of them in at one end, and all the electrons already in the conductor move over and a bunch come out the other end. The electrons already in the conduction band within the conductor support current flow in this way.
Why electron freely in a metal?
The term conductor is generally applied to a substance or material that has a lot of free electrons in it. The name conductor is applied because the free electrons are already there. A material does not have free electrons because it is a conductor, but is a conductor because it has a lot of free electrons. That said, let's look at what's going on. These free electrons have energies that permit them to "wander" through the conductor; they're not "locked into" the structure of the material. And when a voltage (potential difference) is applied, current flows through the conductor because the free electrons are moving. They're made to move by the applied voltage. If we take the case of a wire in a circuit, the wire is a conductor. This wire, say a copper one, has many free electrons in it, and when we apply a voltage, electrons move. The voltage forces electrons into one end of the wire, and the free electrons "shift over" and electrons emerge from the other end of the wire. This movement of free electrons in response to an applied voltage through an conductor is the essence of current flow in that conductor.
When to much current flows through a conductor?
It depends on many factors.!! Mainly it depends upon the type of the conductor. i.e., How many valance electron is there in the conductor. As many as valance electrons as much current flows through the conductor. Length of the material should be less as much as possible and the Area (i.e., Cross section) should be increased. So the conductivity will obviously increased. By sticking in to the basics Resistance of the material should be very low. For an Ideal superconductor the resistance is ZERO as we all know. So more current flows through the conductor.
Why do electrons flow through a wire?
An electrical current is simply the flow of free electrons in and on the conductors. So they are a bit like water molecules in a garden hose. And like those water molecules the flow of free electrons can be physically impeded by whatever is in or on the electrical conductor. When a material is a good conductor, the atoms and molecules of that good conductor do not get in the way of the free electrons. They do not resist the flow of those electrons very much. So even with just a low voltage to push the electrons along, the flow, the current of the electrons is high. But when a material is a bod conductor, the atoms and molecules of that bad conductor do physically get in the way of those free electrons so that they cannot flow freely through the conductor. The resistance is high in a poor conductor. So it takes a relatively higher voltage to push electrons along in a bad conductor...if indeed they can be pushed at all. Some materials are so bad at conducting it's almost impossible to move those electrons along.
The electric current in a medical conductor is carried by positive electrons or electrons?
The answer is electrons. I assume you mean positrons (anti-electrons) by positive electrons, and positrons and electrons go boom when they meet, so we don't see many positrons around.
Electricity is the flow of which subatomic particles?
Electricity is the flow of electrons across a conductor. A conductor can be many things, copper is one of the most efficient. Voltage is what moves the electrons. It works like the pressure that pushes water through a hose.
Materials with many free electrons are considered what?
Electrical Conductor
Do electrons flowing through a good conductor produce more heat than electrons flowing through a poor conductor?
No. The opposite. If by good and poor you are referring to a medium's ability to conduct electricity, then yes, a poor conductor (I suppose) would be a conductor with higher resistance than other conductors like it, although miniscule but a conductor with no resistance is a superconductor. Resistance causes the current flow (of electrons) to have to push through against the resistance which requires electrical energy (Why superconductors don't need voltage supplies). This electrical energy is then converted into heat. Now if you mean poor as in degraded then still no. Oxidation (Rust) is resistive so a worn conductor will generate more heat than a pristine one. The amount of heat generated by electrical resistance (in joules) is proportional the the square of the current.
How is it possible for positive charge to drift through the conductor since it is confined in the nucleus?
An antire ion (charged atom) can move through a liquid or gas. In many other cases, the movement of positive charges is ficticious ("conventional current"), since for many purposes, the movement of electrons in one direction is equivalent to the movement of the conventional current (ficticious current of positive charge) in the opposite direction.
Does a conductor has many positive electrons?
No, a conductor does not have "positive electrons". Positive electrons are positrons, particles of anti-matter. A conductor, because if it's atomic structure, allows electrons to flow more freely from one atom to the other, thus creating electricity.
How many electrons pass through an electric bulb in one minute if 300 A current is passing through?
300A means that 300 coulombs of electrons are passing through it per second. 300 coulombs is (1.87 * 10^19) electrons, or simple 300C of electrons.
Do elctraclcurents have as many electrons as protons?
Electrical currents do not consist of protons, although the substance that carries the current does contain protons, the current itself is the movement of electrons through the medium, be it copper or an unlucky bystander.
