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What are three materials that make good conductors?
Copper, silver, and gold are three materials that make good conductors of electricity due to their low resistance and high conductivity properties.
Difference between copper wire and nichrome wire?
Copper wire is a good conductor of electricity and is commonly used in electrical applications due to its low resistance. Nichrome wire, on the other hand, is a nickel-chromium alloy with high resistance to heat and corrosion, making it suitable for applications like heating elements in appliances and industrial processes. Nichrome wire is used when resistance to high temperatures is required, while copper wire is used for its conductivity.
What is the difference between high copper and low copper amalgam?
Briefly explained, low copper amalgams are also known as "traditional" or "conventional" and have been used for many decades (even at present) and contain less than 6 % copper, while high copper amalgams contain more than 6 % copper, in fact there are 2 main groups, one containing around 12-13 % copper, and the other containing up to 30 % copper. The additional copper helps to increase the formation of gamma 1 (silver-tin) and prevent the formation of a weak phase of dental amalgams, named gamma-2 (tin-mercury) and thus the strength of the final product is higher. Therefore, the high copper amalgams have a higher compressive strength and in general, better mechanical properties, but there is one disadvantage, they release more mercury vapor, a poison for the brain, CNS and many other cells.
Which statement correctly describes copper?
Copper is a ductile and malleable metal with high thermal and electrical conductivity. It is commonly used in electrical wiring, plumbing, and various industrial applications due to its desirable properties.
What is the element used in wiring and pennies?
Copper is the element used in wiring and pennies due to its high electrical conductivity and corrosion resistance.
Why does copper have a low resistance?
Because it is a metal so has lots of free electrons which when connected to a circuit detach from the atoms and move around the circuit. This produces a high current, so resistance will be low as current is high.
Which wire would have the lowest resistance a long thin iron wire at a high temperature or a short thick copper wire at a low temperature?
The short thick copper wire at a low temperature would have the lowest resistance. Copper has lower electrical resistance than iron, and a shorter, thicker wire has lower resistance compared to a long thin wire, regardless of the temperature.
What has a lower resistance a long thin iron wire at high temp or a short thick copper wire at low temp?
A short thick copper wire at low temperature would have lower resistance compared to a long thin iron wire at high temperature. This is because resistance is inversely proportional to cross-sectional area and directly proportional to temperature and length of the wire. The short thick copper wire has a larger cross-sectional area, which results in lower resistance.
Is graphite a high resistance or low resistance of electricity?
Graphite is low resistance of electricity...
What kind of marterials have low resistance?
the best conductors with low resistance are silver, copper, gold, aluminum (best to least best)
Is the viscosity of copper high or low?
high :)
Examples of high resistance and low resistance objects?
High resistance objects include materials like rubber, glass, and dry wood, while low resistance objects include metals like copper, silver, and gold. High resistance objects impede the flow of electrical current, while low resistance objects allow current to flow more easily.
Why is copper wire not used in potentiometer?
Copper wire is not used in potentiometers because copper is highly conductive and would not provide enough resistance for the potentiometer to function properly. Instead, materials with higher resistance, such as nichrome or a graphite-based material, are used to create the variable resistance needed in a potentiometer.
What are some examples of items with low conductivity?
Thermal resistance: diamond Electrical resistance: copper Optical resistance: quartz
What is ment by high resistance and low resistance on a meter?
On a multimeter, a high resistance would indicate a high Ohmic value and a low resistance would indicate a low Ohmic value. Specific values would be relative to device you are measuring.
Do meters usually have a high or low internal resistance?
It depends on the application. Voltmeters have a high internal resistance, while ammeters have a low internal resistance.
What is high resistance and low resistance?
Low resistance lets electrons through easy, and high makes it harder for them to pass. Basically electricity is harder to flow through high resistance and vice versa.
