GENERAL KNOWLEDGE

GK

BASIC GENERAL KNOWLEDGE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Super conductivity is a phenomenon in which the resistance of a substance
A
does not change with temperature
B
becomes zero at very low temperature
C
increases with temperature
D
decreases with temperature
Explanation: 

Detailed explanation-1: -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).

Detailed explanation-2: -Superconductivity is a phenomenon whereby a charge moves through a material without resistance. In theory this allows electrical energy to be transferred between two points with perfect efficiency, losing nothing to heat.

Detailed explanation-3: -Yes, superconductors have zero resistance. A superconductor is a material that can conduct electricity or transport electrons from one atom to another with no resistance. This means current can pass through the material without losing any heat energy.

Detailed explanation-4: -Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in certain materials when cooled below a characteristic critical temperature.

There is 1 question to complete.