Question

7
The resistivity of two conductors 'A' and 'Bare 1.62×10-8 m and
5.20 x 10-8 m respectively. Which of them is used in:
(i) Transportation of electricity
(ii) The making of heating coils? Why?​

Answer 1

for transportation a should be used as it has low resistivity

while for heating coil b should be used as it has high resistivity.