The dimensions of a block are 1cmxx1cmxx...

The dimensions of a block are `1cmxx1cmxx100cm.` If the specific resistance of its material is `2xx10^(-7) ohmxxmetre`, then the resistance between the opposite rectangular faces is

`2xx10^(-9) Omega`

`2xx10^(-7) Omega`

`2xx10^(-5) Omega`

`2xx10^(-3) Omega`

Text Solution

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The correct Answer is:

`R=(rhol)/A=(2xx10^(-7)xx1xx10^(-2))/(1xx100xx10^(-4))=2xx10^(-7) Omega`

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