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`        The resistance of a wire is 10 ohm. It`s length is increased by 10% by stretching. The new resistance will be(1)12ohm (2) 1.2ohm (3)1.3ohm (4)1.1ohm`
3 years ago

Vikas TU
10600 Points
```							As Resistance is directly proportional to the length of the resistance wire,R = kl^2After length gets increased by 10% we get,R’ = k(l + 0.l)^2divide both we get,R/R’ = 1/(1.1)^2 => 1/1.21R’ = 1.21 R ohmthat is second option.
```
3 years ago
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