Question 5:
Use the data in Table 12.2 to
answer the following −
Table 12.2 Electrical
resistivity of some substances at 20°C
(a) Which among iron and mercury
is a better conductor?
(b)
Which
material is the best conductor?
Solution:
(a) In
the said table we can see that the resistivity of mercury is more than that of
iron. Therefore iron is a better
conductor than mercury.
(b) In
the said table we can see that the resistivity of silver is the lowest among
the all materials. Hence, it is the best conductor.
