The resistance of a wire of length 40 m and radius o.25 mm is `10 Omega`. The conductivity of the material of the wire is

Question

The resistance of a wire of length 40 m and radius o.25 mm is `10 Omega`. The conductivity of the material of the wire is

The resistance of a wire of length 40 m and radius o.25 mm is `10 Omega`. The conductivity of the material of the wire is
A. `1xx10^( -7)` mho/m
B. `2xx10^(-7)` mho/m
C. `2xx10^(7)` mho/m
D. `1xx10^(-7)` mho/m

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - C
`sigma = 1/rho=(l)/(RA)=(40)/(10xx3.14xx625xx10^(-10))`
`=2xx10^(7)` mho/m

4 views Answered 2023-02-05 15:29