Electrical conductivity of metals expressed in ohm⁻¹ m⁻¹ is of the order of

A)
10⁵
B)
10¹⁰
C)
10⁻⁴
D)
10⁻⁶

Correct Answer : Option (A) :   10⁵

Explanation : Conductivity is reciprocal of resistivity. Since resistivity of metals is around 10⁻⁷ ohm-m, conductivity is about 10⁷ ohm⁻¹ m⁻¹. So 10⁵ is the nearest value.

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