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superconductors
Josianne Prohaska
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Do conductors offer very little resistance to the flow of electricity?
Yes- you have suggested a correct working definition for a conductor.
What is a material that does not let electrons travel through it?
Generally speaking, a material that does not let electrons travel through it, a material that has a very high resistance to electron flow (electric current), is called an insulator.
At very cold temperatures what loses all resistance to the flow of electricity?
Superconductorssuperconductors
Why do materials have electric resistance?
Covalent bonds, free electrons, etc. Materials with strong covalent bonds do not readily share electrons and thus have very little electron movement or resistance. We need, to our understanding, electron movement in order to conduct electricity effectively at normal temperatures. We aren't talking superconductors here. Free electrons in a material such as copper allow a low resistance to electrical flow. There is also a consideration as to the number of shells of an element and the resultant attraction between the nucleus and the electrons in the outer shell, i.e., the more electrons an element has the more shells and the further away those free electrons are from the nucleus. Copper and iron have four shells with one electron in the outer shell...good. Silver has five shells with one electron in the outer shell...better. Gold and platinum have six shells with one electron in the outer shell...best. Tungsten has six shells, two electrons in the outershell...notable resistance. Lead has six shells, but four electrons in the outer shell...getting more resistive. There are many other examples for each type of metal.
Why does the resistance in a series circuit which includes a light bulb increase when the bulb lights up?
When the current increases as a voltage is applied to the bulb it causes the bulb's special wire filament to get so hot that it glows very brightly. The heating causes changes in the normal electron lattice of the filament, creating more barriers to the flow of the electrons and therefore the resistance of the wire increases as it gets hotter.
Do conductors offer very little resistance to the flow of electricity?
Yes- you have suggested a correct working definition for a conductor.
What is a material that does not let electrons travel through it?
Generally speaking, a material that does not let electrons travel through it, a material that has a very high resistance to electron flow (electric current), is called an insulator.
At very cold temperatures what loses all resistance to the flow of electricity?
Superconductorssuperconductors
What particle of an atom has very little weight?
electron
The electron has very little mass compared to the blank or blank fill in the blank please Number Standard Neutrons Protons Mass?
The electron has very little mass compared to the proton or neutron.
What is an example of viscostiy?
Viscosity is "resistance to flow". Anything that doesn't flow very easily has a higher viscosity level. Oil would be example.
What is subatomic particle with a negative charge and very little mass?
electron
What are supercondutors?
Superconductors are materials that have very low or no resistance to the flow of electricity. These materials usually need to be very cold for this property to appear.
Why conductors offer resistance?
Yes , all conductors have some amount of resistance although it varies depending on the material that is conducting the electricity . Copper has a very low resistance, and aluminum has a slightly higher ( but still quite low ) resistance . This is why they are used as electrical conductors. Conductor resistance results in voltage drop over the conductor and power loss, manifested as heating of the conductor . Therefore , you want as low a conductor loss as is reasonably practical . The reason of resistance is that, no electron has a linear motion when an electric field is applied to it . e- move in random due to apparent collision with other e -' s. This motion is termed to as Brownian motion . The random movement however interrupts with the electric field and creates resistance sue to a negetive field generated .
What is compared to the electron that has very little mass?
Electrons are compared to Dynes....thx
What happens if you add more loads to a series circuit?
When you have multiple loads in a series, the resistance of the loads is added together allowing very little current to flow through the circuit to power any of the loads, making for a low amperage circuit. If you have your loads in parellel, the resistance of the loads in the circuit is subtracted which allows more current to flow, making for a high amperage circuit.
What happens if you add more loads to a series?
When you have multiple loads in a series, the resistance of the loads is added together allowing very little current to flow through the circuit to power any of the loads, making for a low amperage circuit. If you have your loads in parellel, the resistance of the loads in the circuit is subtracted which allows more current to flow, making for a high amperage circuit.
