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Materials and Components

Q1: Electrical conductivity of metals expressed in ohm-1 m-1 is of the order of

A 1010

B 105

C 10-4

D 10-6

ANS:B - 105

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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