Question

. (a) What is the resistance of a conductor?
(b) What happens to the electrical resistance when mercury is cooled to 4.12 K?
(c) What name is given to this phenomenon?​

Answer 1

Answer:

(a) Resistance of a conductor is the obstruction offered by the material of conductor

(b) when mercury is cooled to 4.12 K 8t becomes a super conductor i.e. conductor with 0 resistance

(c) super conductor

Answer 2

a) The resistance is the amount of reduced electricity flow through a conductive material. The good conductors have low resistance and bad conductors/insulators have high resistance.

b) When, mercury is cooled down to the temperature of 4.12 K,the resistance of the mercury becomes zero and the mercury becomes a superconductor.

c) This phenomenon is popularly known as the superconductivity. In this phenomenon, various elements become superconductors in certain scenarios,by losing the resistance.