Question

7. The resistivity of two conductors 'A' and 'B' are 1.62 x 10-80 m and 5.20 x 10-8 m respectively. Which of them is used in
(1) Transportation of electricity (l) The making of heating coils? Why?​

Answer 1

Answer:

(i) Conductor A

(ii) Conductor B because it's resistivity is more than Conductor A so it will resist more electricity .

Explanation:

Answer 2

Given :

Resistivity of Wire A = 1.62 / 10⁸

Resistivity of Wire B = 5.20/ 10⁸

Since ,

Reistance of the conductor directly proportional to Resistivity of the wire .

Therefore,

wire A is having less resistance and wire B is having more resistance .

Hence,

Wire A will be used for transportation of electricity and wire B for making of heating coil .