Under which  temperature does the resistivity of Mercury completely disappear?*1 point16.2K10.2K4.2 K24.2K

The resistivity of mercury becomes zero at a specific temperature known as the critical temperature for superconductivity. For mercury, this temperature is approximately 4.2 K (Kelvin).

When materials exhibit zero resistivity, they are considered superconductors. Superconductivity is a property that occurs in certain materials when cooled below their critical temperature. Below this temperature, electrons can move through the material without resistance, allowing for the flow of electric current without energy loss.

Among the provided options, the temperature under which the resistivity of mercury completely disappears is:

Final Answer

4.2 K