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Why are thick copper wires used as connecting wires?
-- Any energy dissipated by the conencting wires is lost from the circuit, and unavailable to do the job for which the circuit is intended. The less resistance the connecting wires have, the less energy they'll dissipate. So the connecting wires need to have as little resistance as possible. -- Copper is easy to work, easy to form wires from, and is the second-best electrical conductor known, after silver. Copper is used instead of silver because it costs less. -- The thicker any wire is, the less resistance it has.
Why is silver not used in household wiring?
Silver is not commonly used in household wiring because it is more expensive than other metals like copper and aluminum. Additionally, silver has a higher resistance to corrosion, making it less practical for everyday applications. Copper and aluminum are preferred for their cost-effectiveness and reliable conductivity.
Is mercury less reactive than silver?
Mercury is less reactive than silver because it is a noble metal, meaning it is less likely to form compounds with other elements compared to silver. Mercury is more stable and unreactive at room temperature, while silver can tarnish or react with certain substances over time.
Why do you call metals as poor conductors?
Metals are called poor conductors in comparison to materials such as copper and silver because they have higher resistivity, which hinders the flow of electrons or electricity through them. Poor conductors like iron and steel are less effective at conducting heat and electricity due to their atomic structure and electron mobility.
Which material has a greater resistance aluminum or copper wire?
Copper wire has greater resistance than aluminum wire. This is because copper is a better conductor of electricity than aluminum. This means that copper wire will have less resistance and will be able to carry more current with less energy loss.
Which has the least resistance wood iron rubber or silver?
Silver has the least resistance among wood, iron, rubber, and silver. It is an excellent conductor of electricity and heat, making it have the lowest resistance.
Which metal has no resistance?
99.99% silver is the best for no resistance.
How does generate electricity?
The resistance of electrons flowing through conductors cause heat. When alloy metals such as Tungsten, Nichrome, Geman silver, brass or bronze are used they heat up quickly. Generally the thicker the wire the less resistance therefore less heat.
How does electricity generate heat?
The resistance of electrons flowing through conductors cause heat. When alloy metals such as Tungsten, Nichrome, Geman silver, brass or bronze are used they heat up quickly. Generally the thicker the wire the less resistance therefore less heat.
Why is resistance less when resistors are join in parallel?
What do you mean? In a parallel circuit, the combined (or effective) resistance is less than any individual resistance.
What is a silver white metal that does not tarnish?
Silver is a silver-white metal that does not tarnish easily due to its resistance to corrosion.
Can silver be used to make electrical wires?
Silver is used as a low resistance conductive material. Contactors and relays contact points are made of copper and are silver plated to obtain the lowest resistance between the moving contact faces.
Why are thick copper wires used as connecting wires?
-- Any energy dissipated by the conencting wires is lost from the circuit, and unavailable to do the job for which the circuit is intended. The less resistance the connecting wires have, the less energy they'll dissipate. So the connecting wires need to have as little resistance as possible. -- Copper is easy to work, easy to form wires from, and is the second-best electrical conductor known, after silver. Copper is used instead of silver because it costs less. -- The thicker any wire is, the less resistance it has.
Why do small objects have less air resistance?
Small objects have less air resistance because they have less surface area compared to larger objects. Air resistance is caused by the interaction between the object's surface and air molecules as they flow around it. With less surface area, there are fewer interactions and therefore less air resistance acting on the object.
Which wire has the lowest resistance?
Resistance is directly-proportional to the length and resistivity of a conductor, and inversely-proportional to its cross-sectional area. So a shorter wire would have less resistance than a longer wire made from the same material, and a wire with a greater cross-sectional area would have less resistance than one with a smaller cross-sectional area made from the same material. Resistivity depends on the material from which the wire is made, with some materials being better conductors than others. For example, silver has the lowest resistance compared with other metal conductors having identical dimensions. Similarly, a copper wire will have a lower resistance than an aluminium wire of identical dimensions.
What happens to resistance of the wire if the wire is short?
If the wire is short, its resistance will likely decrease. A shorter wire has less length for electrons to travel through, resulting in lower resistance according to the formula R = ρL/A, where R is resistance, ρ is resistivity, L is length, and A is cross-sectional area.
Which material has less resistance?
Lube.
