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there are a couple ways to look at this

easiest is that the increase motion of the metal atoms/molecules makes it more difficult for electrons to find a "path" across the wire.

another way is that it is harder to knock off the inner orbit e-'s at a higher temperature because all the outer ones have been stripped due to molecular bumping at high speed

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13y ago

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What has more resistance a nichrome wire or a copper wire?

A nichrome wire has more resistance than a copper wire. This is because nichrome is made of a nickel-chromium alloy that has higher resistivity compared to copper, which allows it to impede the flow of electricity more effectively.


What happens to a nichrome wire when a current flows through it?

When a current flows through a nichrome wire, the wire heats up due to resistance. This increase in temperature causes the wire to glow and emit heat, which is why nichrome wire is often used in heating elements and appliances.


What is the function of compensating leads in the platinum resistance thermometer?

Compensating leads help to reduce errors in temperature measurement by minimizing the impact of lead resistance on the overall measurement. They are made of the same material as the sensor to maintain consistency in resistance, ensuring accurate temperature readings.


What is difference between 3 wire and 4 wire RTD sensor?

An RTD or Pt100 sensor is connected with two, three or four wires to the measuring device.we learned that we are in fact measuring resistance to determine the temperature. Now when measuring the resistance of the sensing element, we also measure the resistance of the leads and cables used. This gives an error! To compensate for this, the three wire type (bridge) is used, giving enough accuracy in most industrial applications. Even better accuracy is possible with a four wire Pt100 (laboratory applications). Our Pt100 panel mounted indicators have an offset compensation when using two wire sensors.


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.

Related Questions

How does temperature affect resistance of a wire?

If you are asking if a hot wire has a greater resistance than a cold wire then the answer I would say is yes. Cold wires have always had less resistance than hot wires


What are factors that affect resistance of electricity?

Factors that affect resistance of electricity include the type of material the wire is made of (e.g. copper vs. aluminum), the length of the wire (longer wires have higher resistance), and the cross-sectional area of the wire (thicker wires have lower resistance). Temperature also affects resistance, with higher temperatures typically leading to higher resistance.


Three ways which resistance of a wire can be increased?

You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).You can increase the resistance in the wire, by doing any of the following:Increase the length of the wire.Reduce the wire's cross-section.Change to a material that has a greater resistivity (specific resistance).


What are the factors affecting the resista nce of a wire?

The factors affecting the resistance of a wire are its length, cross-sectional area, resistivity of the material, and temperature. As the length of the wire increases, the resistance also increases. A larger cross-sectional area decreases resistance, while higher resistivity materials and increased temperature contribute to higher resistance.


Does a longer wire equal resistance?

Wire is not equal to resistance. If you have two pieces of wire with the same thickness, composition, and temperature, the longer piece has higher electrical resistance.


What can affect the resistance of a wire?

The resistance of a wire can be affected by its length, cross-sectional area, material, and temperature. Longer wires have higher resistance, while thicker wires have lower resistance. Different materials have different resistivities, impacting resistance. Temperature can also influence resistance, with most materials increasing in resistance as temperature rises.


Is electric resistance greater in a short fat wire of a long thin wire?

Electric resistance is greater in a long thin wire compared to a short fat wire, due to the higher resistance associated with longer wires and thinner cross-sectional areas. Resistance is determined by the material's properties and dimensions, with length and cross-sectional area being key factors affecting resistance.


If two wires of the same material have the same thickness but different length the blank wire will have greater resistance?

The thinner the wire, the higher the resistance. The thicker the wire, the resistance decreases. Think of it this way. The thick wire has more room for electrons to jump around, but the thin wire has less room.


Which has the greatest resistance a thick wire or a thin wire of the same length?

A thin wire will have greater resistance than a thick wire of the same length. This is because resistance is inversely proportional to the cross-sectional area of the wire. Thinner wires have smaller cross-sectional areas, leading to higher resistance.


Would a hotter wire have a higher or lower resistance than cooler wire?

A hotter wire will typically have a higher resistance than a cooler wire. This is because as the temperature of a wire increases, the atoms inside the wire vibrate more vigorously, increasing collisions with free electrons and hindering the flow of electric current, thus increasing resistance.


Which has the greater resistance thick wire or a thin of the same length?

The thermal resistance of a wire is proportional to ln(r2/r1), meaning that a thicker wire has a greater thermal resistance.


What would induce a greater electric current in a wire?

A greater electric current in a wire can be induced by increasing the voltage applied across the wire or decreasing the resistance of the wire. Both factors contribute to Ohm's Law (V=IR), where V is voltage, I is current, and R is resistance. Increasing the voltage or decreasing the resistance will lead to a higher current flowing through the wire.