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A wire of diameter 1 mm has a resistance...

A wire of diameter 1 mm has a resistance of 14 `omega`. If the resistivity of its material is `44 xx 10^(-6) omega` -cm, calculate its length.

Text Solution

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As `r=p(1)/(A )`
`=(14xx3.14)/(4xx44)xx100=24.97 =25m`
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