A metal wire of resistivity 64 xx 10^-6 ...

A metal wire of resistivity `64 xx 10^-6 Omega cm` and length `198 cm` has a resistance of `7 Omega`. Calculate its radius.

`2.4 cm`

`0.24 cm`

`0.024 cm`

`24 cm`

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ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19

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