# Which conductor has no resistance?

## Which conductor has no resistance?

Properties of perfect conductors have exactly zero electrical resistance – a steady current within a perfect conductor will flow without losing energy to resistance. Resistance is what causes heating in conductors, thus a perfect conductor will generate no heat.

### Is there any material with 0 resistance?

Superconductors are materials that carry electrical current with exactly zero electrical resistance. This means you can move electrons through it without losing any energy to heat.

#### What is the phenomenon when the resistance is zero?

Summary. Superconductors are solids that at low temperatures exhibit zero resistance to the flow of electrical current, a phenomenon known as superconductivity. The temperature at which the electrical resistance of a substance drops to zero is its superconducting transition temperature (T c).

What is the resistance of a conductor at absolute zero?

At zero temperature in a completely defect-free metal (which doesn’t exist in real life), the resistance will be zero. However, a perfect conductor is not the same thing as a superconductor because the two terms refer to distinct quantum mechanical state.

Which conductor has more resistance?

Answer: Conductor A has more resistance .

## Can a wire have zero resistance?

One final note: for most practical purposes, wire conductors can be assumed to possess zero resistance from end to end. In reality, however, there will always be some small amount of resistance encountered along the length of a wire, unless it’s a superconducting wire.

### What was the first superconductor?

In 1911 superconductivity was first observed in mercury by Dutch physicist Heike Kamerlingh Onnes of Leiden University (shown above). When he cooled it to the temperature of liquid helium, 4 degrees Kelvin (-452F, -269C), its resistance suddenly disappeared.

#### Is the phenomenon of almost zero electrical resistivity that occurs in some metals and alloys?

superconductivity. A property of many metals, alloys, and chemical compounds at temperatures near absolute zero by virtue of which their electrical resistivity vanishes and they become strongly diamagnetic.

Is it possible that resistance of a conductor becomes zero name the process?

Superconductivity is a phenomenon that occurs in some materials when cooled to very low critical temperatures, resulting in a resistance of exactly zero and the expulsion of all magnetic fields. Materials that are normally good conductors (such as copper, gold, and silver) do not experience superconductivity.

Why does a superconductor have zero resistance?

In a superconductor, below a temperature called the “critical temperature”, the electric resistance very suddenly falls to zero. This is incomprehensible because the flaws and vibrations of the atoms should cause resistance in the material when the electrons flow through it.