Electrical Resistivities of some substances at 20oC are given below: (a) Among Silver and Copper which is a - Physics - Electricity

Question

Electrical Resistivities of some substances at 20oC are
given below:

(a) Among Silver and Copper which is a best conductor and why?
(b) Which material would you advise to be used in electrical
heating devices? Why?

Rohit Babu · Accepted Answer

Dear Student,We know,Resistance,R=ρlA⇒R α ρ resistivityaAmong silver and copper,silver is having the lowest resistivity and hence the lowest resistance
Therefore, silver is a good conductor as compared to copper
bThe heating element to be used in electrical heating devices shouldbe of high resistance
In the table, nicrome is  the material having highest value of resistivity
Hence nichrome can be used in heating devices
Regards

Electrical Resistivities of some substances at 20oC are given below: (a) Among Silver and Copper which is a best conductor and why? (b) Which material would you advise to be used in electrical heating devices? Why?

Electrical Resistivities of some substances at 20^oC are given below:

(a) Among Silver and Copper which is a best conductor and why?
(b) Which material would you advise to be used in electrical heating devices? Why?