The resistivity of the conductors is of the order of _______.

10^{8} Ω m

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10^{- 8} Ω m

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10^{8} Ω

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10^{- 8} Ω

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Solution

The correct option is B $10^{- 8} Ω m$
The resistivity of a conductor is of the order of $10^{- 8} Ω m$
Due to lower resistivity, conductors have lower resistance, that's why electric current flow very easily in it.

Answer-(B)

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Similar questions

Q. Resistivities of copper ,silver and magnin are

1.7 \times 10^{- 8} Ω m, 1.0 \times 10^{- 8} Ω m

and

44 \times 10^{- 8} Ω m

respectively which of these is the best conductor ?

(a) Give two examples of substances which are good conductors of electricity. Why do you think they are good conductors of electricity?
(b) Calculate the resistance of a copper wire 1.0 km long and 0.50 mm diameter if the resistivity of copper is $1.7 \times 10^{- 8} Ω m .$