My answer to this question may seem strange-- If a teacher asked this question, the teacher or the texbook has it wrong. The correct answer depends on many things that are not asked here. An advanced and recent electromagnetic theory text might have the right answer. Generally, you can think of the electrons flowing throughout the conductor at DC and low frequencies. As the frequency increases, the flow restricts itself more and more to the surface. See the term "skin effect" for more information.
That depends on your soil and your definition of "good". Dry soil is probably a very poor conductor. Wet soil can be a pretty good conductor if you have large contact surface areas and dissolved salts in the water.
Gold is used as a conductor of electricity on flash drives, USB cables, etc. It plates the metal surface to let the most electricity flow. The question should be why not how. Gold is impervious to oxidation and a very good conductor. So connections are more reliable if made with gold contacts as opposed to copper which oxidizes easily.
In general, plastics are composed of many chains of complex molecules. In a lot of cases, all the valence electrons of all the atoms of the material are in Fermi energy levels below the conduction band. That is, the energy required to move electrons in plastics is "high" because the energy levels that electrons would have to be in within the structure of the plastic are well above where the electrons are actually hanging out. The conduction band is a term we apply to the energy band that electrons have to be in to support current flow. Remember that current flow is like musical chairs in that everyone has to "move over one" all along the current path for current to flow. It's isn't about one electron going "into" a circuit at one end and that same electron coming out the other end. The "willingness" of electrons to "move over" to support current flow is conductivity, and electrons that are in "too low" an energy level (because they are being "kept at home" by the chemical structure of the material - the plastic) won't help with conduction. Just as a quick contrast, in a metal, there are lots of electrons in energy levels high enough to support conduction. These are the so-called "free electrons" you hear about. Plastics don't have them.
Basically the semi-conductor junctions are a larger surface area and heat sinks are part of the design to dissipate heat.
In a cathode ray tube (CRT), the particles, which are electrons, originate at the heated cathode, becoming the so-called cathode rays. The electrons stream off the cathode and rush over to the anode.
Both static and current electricity involve the movement of electrons. In static electricity, electrons build up on an object's surface, creating an imbalance of charge. In current electricity, electrons flow through a conductor, creating an electric current.
A conductor can build up a static charge by gaining or losing electrons through friction with another material. This excess or deficit of electrons creates an imbalance in charge, leading to a build-up of static electricity on the surface of the conductor.
Static electricity is a stationary electric charge produced by the accumulation of excess electrons on an object's surface. It is different from current electricity, which is the flow of electric charge through a conductor. Static electricity is commonly generated by friction between two objects.
Static electricity does not move, as it stays in one place until it is discharged through a conductor. Static electricity is the build-up of electric charge on the surface of objects due to an imbalance of electrons.
Element that has a low melting point and a dull surface, breaks easily, is a poor conductor of heat and electricity, and tends to gain electrons in a chemical reaction....
A conductor is something that allows for the movement of tiny charge carrying particles called electrons across the surface. The specific elements that make up wood and the way that its molecules are arranged don't allow for ease of movement of electrons across its surface.
First we have to define the word an electron, An electron is negatively charged particle. A metal is a substance consists of number of both electrons and protons. Electrons emitted from the metal surface through different ways such ways as Thermionic, Photoelectric, etc. Free electrons of conductor are electrons emitted from conductor when it disturbed through ways as mentioned above
An insulated conductor can be charged by rubbing it with another material to transfer electrons. The excess electrons will distribute themselves along the surface of the conductor due to repulsion. The conductor can then discharge by connecting it to a conductive path that allows the electrons to flow away.
Corona is a result of the ionization of a fluid around a conductor; when referring to electrical power lines, this is the ionization of the air around the conductor. At very high voltages (200kV and greater), this can become very significant, and can cause the deteriation of the conductor, or any conducting surface near the conductor, so special care is taken to mitigate it (such as using corona rings and bundled conductors). The ionization is a result of the buildup of electrons. Corona rings and bundled conductors provide a larger surface area for the electrons to "sit on".
An electrical conductor is a material whose molecules contain loose valence electrons that can easily be passed between molecules. When an electrical potential difference (aka voltage) is applied to the surface, the electrons drift toward or away from it (depending on the charge) - this is referred to as the conduction of electricity.
It means that it's a material whose outer shell electrons move freely across the surface of the material. Conductors can carry an electric current
Static electricity is the accumulation or build up of electricity charges on the surface of a material, usually an insulator or non-conductor of electricity.