Question

The resistivity of two conductors ‘A’ and ‘B’ are 1.62 x 10−8 Ω m and 5.20 x 10−8 Ωm respectively. Which of them is used in :
(i) Transportation of electricity
(ii) The making of heating coils? Why?

Answer 1

Answer:

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Answer 2

Answer:

Explanation: i)as the resistivity decreases conductivity increases conductor A is having less resistivity and helps to easy flow of current. therefor conductor A is used for transportation of electricity

ii)as resistivity increases heating effects increases. conductor B is having more resistivity. therefore to get more heating effects in heating coil conductor B is used to make heating coil

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